Pierre Boulez – Ben LaMar Gay
Pierre Boulez Saal Französische Straße 33d, BerlinBen LaMar Gay - Kornett, Vocals
Macie Stewart - Violine
Mikel Patrick Avery - Drums
Sam Pluta - Live Electronics
Célia Wa - Flute
Sophie Agnel - Klavier
Pascal Niggenkemper - Bass
Ludwig Wandinger | Studnitzky
Emmauskirche Lausitzer Platz 8 A, BerlinLudwig Wandinger
STUDNITZKY x TAPE SHIFTER
Kammermusik Festival
Piano Salon Christophori Uferstr.8, BerlinRoi Shiloah Violine
Ariel Tushinsky Cello
Guy Ben-Ziony Viola
Miri Yampolsky Klavier
Davide Incorvaia & Richard Müller
Café Tasso Frankfurter Allee 11, BerlinDavide Incorvaia Piano
Richard Müller Bass
Stringband Lowdown
Yorckschlösschen Yorckstraße 15, BerlinAnton Wunderlich – piano, posaune, vocals
Federico Zaltron – violin & viola
Laurin Habert – basssaxophon, clarinet
Max Keitel – e-guitar
Volker Meitz – NINE DUOs Album release
Kühlspot Social Club Lehderstraße 74, BerlinThorsten Bahr saxophones
James Crutchfield guitar
Antti Virtaranta double bass
Paul Brauner double bass
Marcello Busato drums
Vortex Kollectief
Peppi Guggenheim Weichselstrasse 7, BerlinJeremy Viner saxophone
Aniol Torrents bass
Gregory Eric Smith drums/compostions
Schlippenbach Gauchel Mahall Roder Schroeder
Sowieso Weisestraße 24, BerlinAlexander von Schlippenbach piano
Walter Gauchel saxophones
Rudi Mahall clarinets
Jan Roder double bass
John Schröder drums
Kelvin Sholar Jazz Trio feat. Sam Leigh Brown
Badenscher Hof Badensche Straße 29, BerlinSam Leigh Brown – vocals
Kelvin Sholar – piano
Charles Sammons – bass
Eric Vaughn - drums
EB DAVIS & THE SUPERBAND
A-Trane Bleibtreustraße 1, BerlinEb Davis – Vocal/Harp
Nina T. Davis – Piano/Keys/Vocal
Willie Pollock – Saxophon/Vocal
Jay Bailey – Guitar/Vocal
Ben „King“ Perkoff – Saxophon
Tom Blacksmith – Bass/Vocal
Dicarlo – Drums
Jaspar Libuda Trio – Neujahrskonzert
Kunstfabrik Schlot Invalidenstraße 117, BerlinJaspar Libuda: Komposition, fünfsaitiger Kontrabass, Live-Elektronik, Loopstation
Florian Segelke: Gitarre, Live-Elektronik
Sven Tappert: Schlagzeug, Perkussion, Klangstäbe
Lucia Fodde & Band
B-Flat Dircksenstraße 40, BerlinLucia Fodde vocals
Tom Maciel piano
Eudinho Soares guitar
Trigo Santana bass
Ney Victor drums
Kris Davis Trio feat. Robert Hurst & Johnathan Blake
Zig Zag Hauptstraße 89, BerlinKris Davis piano
Robert Hurst bass
Johnathan Blake drums
Acid Arab
Gretchen Obentrautstraße 19-21, BerlinDrama Drama (Dreamatic Records/MA)
Pierre-Yves Casanova Compositions, DJ
Nicolas Borne Compositions, DJ
Hervé Carvalho Compositions, DJ
Guido Minisky Compositions, DJ
Kenzi Bourras Piano, Keyboard
Tamar Halperin mit Guy Sternberg | Tamuz Dekel
Emmauskirche Lausitzer Platz 8 A, BerlinTamar Halperin mit Guy Sternberg
Tamuz Dekel
Karsten Troyke Trio
Haus der Sinne Ystader Straße 10, BerlinKarsten Troyke Vocals
Daniel Weltlinger Violin
Martin Buhl Staustrup Bass
Monsieur Pompadour Swing
Yorckschlösschen Yorckstraße 15, BerlinErnesto Pompadour – Guitar Vocal
Ferenc Krisztián Hegedütok – Violin, Vocal
Florian von Frieling – Guitar, Mandolin, Vocal
Antti Virtaranta – Bass, Vocal
Seth Sjöström band
Peppi Guggenheim Weichselstrasse 7, BerlinDaniel Sauer Saxophone
Ronja Andersson Vocals
Jakob Øland Klavier
Mia Ohlmeier Drums
Seth Sjöström E-Bass
Kantine Musik
Sowieso Weisestraße 24, BerlinMicha Acher trumpet flugelhorn
Juliana Perdigão vocals
Dudú Kouate percussion
Cassie Kinoshi saxophone
Laurel Pardue violin electronics
Bex Burch percussion
EB DAVIS & THE SUPERBAND
A-Trane Bleibtreustraße 1, BerlinEb Davis – Vocal/Harp
Nina T. Davis – Piano/Keys/Vocal
Willie Pollock – Saxophon/Vocal
Jay Bailey – Guitar/Vocal
Ben „King“ Perkoff – Saxophon
Tom Blacksmith – Bass/Vocal
Dicarlo – Drums
Dimitri Howald & The Amnis Band
Donau 115 Donaustrasse 115, BerlinDimitri Howald guitar, vocals
Stefan Schischkanov guitar, vocoals, synth
Antonio Schiavano - bass
Flo Reichle - drums, MPC
The Toughest Tenors
Kunstfabrik Schlot Invalidenstraße 117, BerlinBernd Suchland tenor saxophone
Patrick Braun tenor saxophone,
Dan-Robin Matthies piano
Lars Gühlcke bass
Ralf Ruh drums
The Jeff Mezzrow Band
B-Flat Dircksenstraße 40, BerlinJeff Mezzrow guitar, vocals
Tim Beutler bass, vocals
Livia Rinalli drums, vocals
Benjamin Lackner Quintet – Spindrift
Zig Zag Hauptstraße 89, BerlinBenjamin Lackner piano
Matthias Eick trumpet
Maciej Obara alt saxophone
Harish Raghavan bass
Matthieu Chazarenc drums
Schikane @jazzkeller
Industriesalon Schöneweide Reinbeckstraße 9, BerlinNikolaus Neuser – trumpet
Jörg Schippa – guitar
Denis Stilke – drums
Mafalda Ensemble
Kunstfabrik Schlot Invalidenstraße 117, BerlinChié Peters - Violine
Christiane Starke - Violoncello
Christoph Anacker - Kontrabass
Helmut Abel - Bandoneon
Tuyêt Pham - Klavier
Aki Takase | Materia Air
Emmauskirche Lausitzer Platz 8 A, BerlinAki Takase piano
Materia Air - Puntin Apriadi Weyeneth
Kammermusik Festival
Piano Salon Christophori Uferstr.8, BerlinRoi Shiloah Violine
Ariel Tushinsky Cello
Guy Ben-Ziony Viola
Miri Yampolsky Klavier
Red Color Trio + Revuelta de ave
Exploratorium Zossener Straße 24, BerlinRED COLOR TRIO
Edith Steyer Clarinet, Effects
Hada Benedito Piano
Isabel Rößler Double Bass
Revuelta de ave
Sofia Salvo Saxophone
Lorena Izquierdo Voice
Trio Grenzgänger
B-Flat Dircksenstraße 40, BerlinManuel Borraz piano
Victor Vivar bass
Ruben Staub clarinet
Eldar Tsalikov sings!
Zig Zag Hauptstraße 89, BerlinEldar Tsalikov alto saxophone
Declan Forde piano
Igor Spallati bass
Ugo Alunni drums
ATOS TRIO
Piano Salon Christophori Uferstr.8, BerlinAnnette von Hehn Violine
Stefan Heinemeyer Violoncello
Thomas Hoppe Klavier
Blue Moonday Jazzsession
café engels Herrfurthstraße 21, BerlinCharlotte Joerges - saxophone
Band tba
Davidoff Trio
Piano Salon Christophori Uferstr.8, BerlinJohannes Wendel Violine
Christoph Lamprecht Violoncello
Yona Sophia Jutzi Klavier
Havana Express Berlin
B-Flat Dircksenstraße 40, BerlinSergio Medina – vocals
Alexander Wienand – piano
Urs Johnen – bass
Diogenes Nodarse – percussion
Anna Gelyuk – drums
David Beecroft – saxophone
Greg Ambroisine – trumpet
Au Revoir Ears
Kunstfabrik Schlot Invalidenstraße 117, BerlinTobias Delius Tenorsaxophon
Olaf Rupp E-Gitarre
Isabel Rößler Kontrabass
Jan Leipnitz Drums
Oscar Bohorquez Yannick Rafalimanan
Piano Salon Christophori Uferstr.8, BerlinOscar Bohorquez Violin
Yannick Rafalimanan Piano
Schikane //#pandajazz
Panda Platforma Knaackstraße 97, BerlinNikolaus Neuser – trumpet
Jörg Schippa – guitar
Denis Stilke – drums
Daoud Good Boy
A-Trane Bleibtreustraße 1, BerlinDaoud – Trumpet
Etienne – Piano/Fender Rhodes/Prophet
Louis – Kontra Bass
Guillaume – Drums
Jermyn Galvin Gawlik Baumgartner | Charlotte Greve
Donau 115 Donaustrasse 115, BerlinElliot Galvin Keyboard
Julius Gawlik tenor sax, clarinet
Simon Jermyn electric bass
Moritz Baumgärtner – drums
Alec Orea Quintet
Zig Zag Hauptstraße 89, BerlinAlec Orea piano
Alex Sipiagin trumpet
Will Vinson saxophone
Boris Kozlov bass
Rodrigo Diao Braz drums
Fuasi & The Band JTTS
Badenscher Hof Badensche Straße 29, BerlinFuasi Abdul Khaliq – saxophone
Rolf Zielke – piano
Max Hughes – bass
Kenny Martin - drums
Chris Jarrett Piano solo
Piano Salon Christophori Uferstr.8, BerlinChris Jarrett Piano solo
Rojas & Werner | Strahl & Sommer
Sowieso Weisestraße 24, BerlinRojas & Werner
Ángeles Rojas tambura
Sydney Werner double bass
Strahl & Sommer
Silke Strahl saxophone
Kevin Sommer clarinet
FÖRSTER WENTA KÜRVERS
Kühlspot Social Club Lehderstraße 74, BerlinRosi Förster voice & electronics
Lena Wenta feedback clarinet
Klaus Kürvers double bass
Ancient Infinity Orchestra
Gretchen Obentrautstraße 19-21, BerlinAncient Infinity Orchestra (Gondwana Records/UK) *live*
Kessoncoda (Gondwana Records/UK) *live*
Mari* (DJ-Set//Gondwana Records/UK/JP)
Björn Lücker Berlin Ensemble
B-Flat Dircksenstraße 40, BerlinBjörn Lücker drums composition
Rudi Mahall clarinet, bassclarinet
Henrik Walsdorff tenor saxophone
John Schröder piano
Lars Gühlcke bass
Reiner Hess Quartet
Kunstfabrik Schlot Invalidenstraße 117, BerlinReiner Hess Altosax
Rudy Redl Klavier
Andreas Henze Bass
Tilman Person Schlagzeug
Francesca Tandoi Trio
Zig Zag Hauptstraße 89, BerlinFrancesca Tandoi piano
Matheus Nicolaiewsky bass
Sander Smeets drums
Ferenc Snétberger solo
Babylon Kino Rosa-Luxemburg-Straße 30, BerlinFerenc Snétberger - Guitar
Clarissa Bevilacqua Martina Consonni Martina Biondi
Piano Salon Christophori Uferstr.8, BerlinMartina Consonni Klavier
Clarissa Bevilacqua Violine
Martina Biondi Cello
Pat Appleton – Live Recording Session
speakeazy stage & studio Kulmer Straße 20A, BerlinPat Appleton - Vocals
Till Sahm - Keyboard & Effekte
Carsten Schmelzer – Bass
Jan Burkamp – Schlagzeug
Eric Trejo & Rodrigo Santa María
Café Tasso Frankfurter Allee 11, BerlinEric Trejo Guitar
Rodrigo Santa María Guitar
Christian Kühn Quentin Cholet Dan Peter Sundland
Kühlspot Social Club Lehderstraße 74, BerlinChristian Kühn - guitar
Quentin Cholet - drums/ percussion
Dan Peter Sundland - e bass
Tom Maciel Trio
Peppi Guggenheim Weichselstrasse 7, BerlinTom Maciel piano and composition
Sofia Efty double-bass
Axel Filip drums
Sound & Lecture N° 25: Film – Sound – Improvisation
Exploratorium Zossener Straße 24, BerlinMusik zu experimentellen Stummfilmen
Eunice Martins (BE/DE): Klavier
Sofia Borges (PT/DE): Perkussion
Caroline Cecilia Tallone (CH/DE): Drehleier
Eric Wong (US/HK/DE): Gitarre, Elektronik
Devlin Viner Jermyn Kummer
Sowieso Weisestraße 24, BerlinClaire Devlin tenor sax
Jeremy Viner tenor sax & clarinet
Simon Jermyn electric bass
Tancrède D. Kummer drums
David Haynes & Friends
A-Trane Bleibtreustraße 1, BerlinDavid Haynes – Drums
Guy Harrison – Keys
Bjössi – Guitar
Stefan Fuhr – Bass
SPECIAL GUESTS:
Kirk Smith – Vocal
Ania Szarmach – Vocal
Shannon Barnett Quartet
Donau 115 Donaustrasse 115, BerlinShannon Barnett Trombone
Stefan Karl Schmid Tenor Saxophone
David Helm Bass
Fabian Arends Drums
Incorvaia Barthelmes Band
Kunstfabrik Schlot Invalidenstraße 117, BerlinDavide Incorvaia piano
Johannes Barthelmes trumpet
Luca Curcio bass
Ivars Arutyunyan drums
The Cuban Heartbeat Orchestra
Zig Zag Hauptstraße 89, BerlinOlvido Ruiz – vocals
Regis Molina – saxophone
Daniel Stawinski – piano
Checho Gomez – bass
Robby Geerken – congas
Javier Reyes – drums
Roman Ott Berlin Band
B-Flat Dircksenstraße 40, BerlinRoman Ott saxophone
Benny Lackner piano
Lars Gühlcke piano
Heinrich Köbberling drums
Hamburg Blues Band
Quasimodo Kantstrasse 12a, BerlinGert Lange, Krissy Matthews,
Reggie Worthy, Eddie Filipp
special guest: Vanja Sky
Maria Baptist @ Philharmonie
Philharmonie Herbert-von-Karajan-Straße 1, BerlinKammermusiksaal
Maria Baptist - piano
Solo Programm
The „B-flat All-Stars“present Mrs. Julie Silvera
B-Flat Dircksenstraße 40, BerlinJulie Silvera - vocal
Paul Feise - saxophone
Conor Cantrell - guiitar
Hendrik Nehls - bass
David Guy - drums
DAVID HAYNES & Friends
A-Trane Bleibtreustraße 1, BerlinDavid Haynes: Drums
Guy Harrison: Keys
Will Jacobs: Guitar
Stefan Fuhr: Bass
SPECIAL GUESTS:
Kirk Smith: Vocal
Ania Szarmach: Vocal
Glenn Miller Orchestra®
Friedrichstadt-Palast Friedrichstr. 107, BerlinThe Worlds Famous
GLENN MILLER ORCHESTRA ®
directed by Uli Plettendorf
Blue Moonday Jazzsession
café engels Herrfurthstraße 21, BerlinCharlotte Joerges - saxophone
Band tba
Ufafabrik: Hugh Coltman
IKC ufaFabrik Viktoriastraße 10, BerlinHugh Coltman - Vocals
begleitet von einer Band aus großartigen Musikern
Kruder & Dorfmeister
Philharmonie Herbert-von-Karajan-Straße 1, BerlinGroßer Saal
Kruder & Dorfmeister
Flammer Dance Band
Neue Zukunft Alt-Stralau 68, BerlinOlve Gravklev - drums
Mikkel Berggrav - keys
Mikkel Bjørneboe - bass
Bror Havnes - bass
Jelly Jels - guitar
Sifu Pablo - percussion
Torb Roach - vocals synth
Pierre Boulez – Gordon Grdina
Pierre Boulez Saal Französische Straße 33d, BerlinGordon Grdina - Oud, Gitarre
Matt Mitchell - Klavier
Eylem Basaldi - Violine
Hamin Honari - Tombak, Daf
Célia Wa - Flute
Christian Lillinger - Drums
Ghalia Benali - Vocals
Andrej Hermlin and his Swing Dance Orchestra 7th feb
Philharmonie Herbert-von-Karajan-Straße 1, BerlinRACHEL – swinging sweatheart
ANDREJ – bienenzüchter
THE REEFERMAN – Erfinder des Davidophones
JOYCE – Bürgermeisterin
JACK – der Quotenaustralier
LARS – Billiardspieler
DUPSI – besorgt die Uhren und Krawatten
THE DUKE – britisch höflicher Klarinettist
MALTE – spielte als Mr.T. Tukur an den Rand
DJANGO – fährt gern Auto
SWINGMACHINE – tänzelnder Kornettist
GENA – verwandelt amerikanischen Swing in russische Schlager
Maria Baptist Orchestra
Kunstfabrik Schlot Invalidenstraße 117, BerlinRhythm: Piano - Maria Baptist, Bass - Niklas Lukassen, Drums - Heinz Lichius
Reeds: Nico Lohmann, Jan von Klewitz, Richard Maegraith,
Patrick Hamacher, Björn Frank
Trumpets: Philip Sindy, Fabian Engwicht, Ruben Giannotti, Alexander Gibson
Trombones: Julius Hopf, Will Pethick, Simeon Prause, Geoffroy de Masure
Madeleine Peyroux Let’s Walk Tour
Urania An der Urania 17, BerlinMadeleine Peyroux – vocals
Ufafabrik: Ethel Merhaut
IKC ufaFabrik Viktoriastraße 10, BerlinEthel Merhaut - Vocals
„Here & There“ – so heißt das neue Album von Ethel Merhaut, das am 16. Februar 2025 im Rahmen eines exklusiven Release-Konzerts im Porgy&Bess in Wien gefeiert wird
XJAZZ presents – Masaa
Emmauskirche Lausitzer Platz 8 A, BerlinRabih Lahoud - vocals
Reentko Dirks - guitar
Marcus Rust - trumpet
Demian Kappenstein - drums
Zoran Terzic ´s Melodies for Millions
Jazz am Helmholtzplatz Um den Helmholtzplatz und in Brandenburg, Berlin BrandenburgZoran Terzic - wurlitzer
Rodolfo Paccapelo - bass
Jan Leipnitz - drums
Jazz & Lyrics: Synästhesie und Jazz 1|2
Deutsche Oper Berlin Richard-Wagner-Str. 10, BerlinCurator: Sebastian Krol Rüdiger Ruppert
Udgang by Atahan Çiftçi
Haus der Sinne Ystader Straße 10, BerlinAtahan Çiftçi Oud
Felix Barth Bass
Ali Hasan Percussion
Late Night: »Cantando hacia el Sur«
Philharmonie Herbert-von-Karajan-Straße 1, BerlinLucas Dorado Vibrafon
Mathilde Vendramin Violoncello und Gesang
Carolina Riaño Gesang
Laura Robles Cajón und Perkussion
Lajos Meinberg Trio
Jazz am Helmholtzplatz Um den Helmholtzplatz und in Brandenburg, Berlin BrandenburgLajos Meinberg - piano
Morten Larsen - bass
Ugo Alunni - drums
Jazz & Lyrics: Synästhesie und Jazz 2|2
Deutsche Oper Berlin Richard-Wagner-Str. 10, BerlinCurator: Sebastian Krol Rüdiger Ruppert
Nubya Garcia
Metropol Nollendorfplatz 5, BerlinNubya Garcia - Saxophone, Flute, Composition
Bandonegro
Haus der Sinne Ystader Straße 10, BerlinMichał Główka Bandoneon und Akkordeon
Jakub Czechowicz Violine
Marek Dolecki Piano
Marcin Antkowiak Kontrabass
Tawabil Project
Haus der Sinne Ystader Straße 10, BerlinAyman Hlal - violin
Jonas Fehrenberg - guitar
Wesam Karema - accordeon
Kammerjazz Kollektiv
Terzo Mondo Grolmanstraße 28, BerlinDavis West Violin
Sebastian Peszko Viola
Alejandro Barría Cello
Daniel Stawinski Piano, Composition
Bernardo Monk mit Pablo Woiz und David Hagen
Haus der Sinne Ystader Straße 10, BerlinBernardo Monk Saxophone
Pablo Woiz Akkordeon
David Hagen Bass
Jim Funnell ’s word out new dream
Brotfabrik Caligariplatz 1, BerlinJim Funnell - piano
Holger Scheidt - bass
Akiko Horii - percussion
Joe Hertenstein - drums
Pierre Boulez – Kamilya Jubran
Pierre Boulez Saal Französische Straße 33d, BerlinKamilya Jubran - Vocals, Oud
Werner Hasler - Trumpet, Electronics
Charlotte Testu - Bass, Vocals
Soizic Lebrat - Cello
Chanson und Jazz mit Mathilde Vendramin
Brotfabrik Caligariplatz 1, BerlinMathilde Vendramin - vocals
Arseny Rykov - piano
Rodolfo Paccapelo - bass
Greg Smith - drums
Jazz at Berlin Philharmonic: »Berlin ‒ Berlin«
Philharmonie Herbert-von-Karajan-Straße 1, BerlinLucia Cadotsch Trio »Speak Low«:
Lucia Cadotsch - Gesang
Petter Eldh - Bass
Otis Sandsjö - Tenorsaxofon
Julia Hülsmann Quartett:
Julia Hülsmann - Klavier
Uli Kempendorff - Saxofon
Marc Muellbauer - Kontrabass
Kurt Rosenwinkel Trio:
Kurt Rosenwinkel - Gitarre
Doug Weiss - Kontrabass
Nicola Andrioli - Klavier
Duo Oxymoron
Jazz am Helmholtzplatz Um den Helmholtzplatz und in Brandenburg, Berlin BrandenburgAnna Steinkogler - harp
Valentin Butt - accordion
Manon Mullener Trio
Jazz am Helmholtzplatz Um den Helmholtzplatz und in Brandenburg, Berlin BrandenburgManon Mullener - piano
Lucien Mullener - bass
Rodrigo Aravera - drums
Kamasi Washington
Theater des Westens Kantstraße 12, BerlinKamasi Washington - Fearless Movement
Michael Wollny Trio
Philharmonie Herbert-von-Karajan-Straße 1, BerlinMichael Wollny - Klavier
Tim Lefebvre - Bass
Eric Schaefer - Schlagzeug
World-Reihe Philharmonie
Philharmonie Herbert-von-Karajan-Straße 1, BerlinSouad Massi - Gitarre und Gesang
Malik Kerrouche - Gitarre
Mokrane Adlani - Violine und Banjo
Guy Nsangue - Bass
Rabah Khalfa - Percussion
Maamoun Dehane - Drums
Hania Rani & Ensemble
Philharmonie Herbert-von-Karajan-Straße 1, BerlinGroßer Saal
Ghosts
Hania Rani & Ensemble
Pierre Boulez – Kinan Azmeh CityBand
Pierre Boulez Saal Französische Straße 33d, BerlinKinan Azmeh Clarinet
Kyle Sanna Guitar
Josh Myers Bass
John Hadfield Drums
Jan Garbarek | Anouar Brahem
Philharmonie Herbert-von-Karajan-Straße 1, BerlinJan Garbarek Group feat. Trilok Gurtu:
Jan Garbarek Saxofon
Trilok Gurtu Percussion
Anouar Brahem Quartett:
Anouhar Brahem Oud
Dave Holland Bass
Django Bates Klavier
Anja Lechner Violoncello
Pierre Boulez – Nduduzo Makhathini
Pierre Boulez Saal Französische Straße 33d, BerlinNduduzo Makhathini - Piano
Omagugu - Vocals
Jazz at Berlin Philharmonic: »Europeana«
Philharmonie Herbert-von-Karajan-Straße 1, BerlinJoachim Kühn - Klavier
NDR Big Band
Geir Lysne Leitung
vision string quartet:
Florian Willeitner - Violine
Daniel Stoll - Violine
Sander Stuart - Viola
Leonard Disselhorst - Violoncello
Nils Landgren - Posaune und Gesang
Émile Parisien - Sopransaxofon
World-Reihe Philharmonie
Philharmonie Herbert-von-Karajan-Straße 1, BerlinSonah Jobarteh - Gesang und Kora
Sidiki Jobarteh - Balafon
Eric Appapoulay - Gitarre und Gesang
Mamadou Sarr - Gesang und Perkussion
Andi McLean - Bass und Gesang
Yuval Wetzler - Drums und Gesang