• The Living Composers Project

• List of 21st-centrury classical composers

• Music Resources on Diversity and Underrepresentation: Composers

• Pytheas Center for Contemporary Music

• 10 CONTEMPORARY BLACK COMPOSERS YOU SHOULD KNOW

• ​https://www.classicsforkids.com/composer-explorer/

• Band Camp

• Hoopla

A

• Accessible Contemporary Music

• Alarm Will Sound

• ALEA Ensemble

• Alea III

• Amaryllis Chamber Ensemble

• American Composers Orchestra

• American Modern Ensemble

• American Wind Symphony Orchestra

• Arditti Quartet

• Ascolta

• Asko/Schönberg

• Australia Ensemble

B

• Bach Aria Group

• Balanescu Quartet

• Bang on a Can

• Bang on a Can All Stars

• Béla Quartet

• Berg Orchestra

• Birmingham Contemporary Music Group

• BIT20 Ensemble

• Blair Quartet

• Boston Modern Orchestra Project

• Boston Musica Viva

• Bridge to Everywhere

C

• California EAR Unit

• Car Ensemble of the Netherlands

• Cassatt Quartet

• Claremont Trio

• Classical Jazz Quartet

• Cleveland Chamber Symphony

• Collage New Music

• The Composers Quartet

• Concorde Contemporary Music Ensemble

• Corigliano Quartet

• Crash Ensemble

D

• Da Capo Chamber Players

• Dallas String Quartet

• Deep Listening Band

• Del Sol Quartet

• Dmitri Pokrovsky Ensemble

• Dreamtiger

• Dublin Guitar Quartet

• Duo Gelland

• Dynamis Ensemble

E

• Echo Collective

• Edison Studio

• Eighth Blackbird

• ELISION Ensemble

• Endymion (ensemble)

• Ensamble Nacional del Sur

• Ensemble 2e2m

• Ensemble Aleph

• Ensemble Ars Nova

• Ensemble Dal Niente

• Ensemble intercontemporain

• Ensemble l'Itinéraire

• Ensemble Modern

• Ensemble Musikfabrik

• Ensemble neoN

• Ensemble Nostri Temporis

• Ensemble recherche

• Ensemble Signal

• Ensemble Sortisatio

• Esprit Orchestra

• Estonian Philharmonic Chamber Choir

• Ethel (string quartet)

• Europa String Choir

F

• Face the Music (music ensemble)

• Fires of London

• Five Centuries Ensemble

• FLUX Quartet

• Fred Frith Guitar Quartet

• Fundación Cultural Patagonia String Quartet

G

• Gamelan Son of Lion

• Genghis Barbie

• Ghost Ensemble

• Gildas Quartet

• Group 180

• The Group for Contemporary Music

• Groupe Lacroix

• Grupo Música Nova

H

• HOCKET (duo)

• Hoketus

• Hyperion Ensemble

I

• Icebreaker (band)

• ICTUS

• International Contemporary Ensemble

J

• JACK Quartet

• Just Alap Raga Ensemble

• Juventas New Music Ensemble

K

• Kaltchev Guitar Duo

• Klangforum Wien

• Kronos Quartet

L

• London Contemporary Orchestra

• London Sinfonietta

• Los Angeles Electric 8

• Lost in the Trees

• Luxembourg Sinfonietta

M

• Magma (band)

• Melos Ensemble

• Meridian Arts Ensemble

• Michael Nyman Band

• Millennial Choirs & Orchestras

N

• The Naghash Ensemble

• Nash Ensemble

• National Intercollegiate Band

• Nevsky String Quartet

• New Century Chamber Orchestra

• New European Ensemble

• Newband

• Next Mushroom Promotion

• Nexus (ensemble)

• North Sea Radio Orchestra

• North/South Consonance Ensemble

• Nouvel Ensemble Moderne

O

• Orchestra 2001

• Oslo Sinfonietta

P

• Passepartout Duo

• Peculate (band)

• Les Percussions de Strasbourg

• Philip Glass Ensemble

• Piano Circus

• Pittsburgh New Music Ensemble

• Plus-minus ensemble

• Project Trio

• Psappha (ensemble)

• PUNTO Experimental Music Ensemble

Q

• Quince Ensemble

R

• Radius (music ensemble)

• Red Note Ensemble

• Relâche (musical group)

• The Rubio Quartet

S

• S.E.M. Ensemble

• Salut Salon

• San Francisco Composers Chamber Orchestra

• Schreck Ensemble

• Smith Quartet

• Sonanza Ensemble

• Sond'Ar-te Electric Ensemble

• Southwest Chamber Music

• Speculum Musicae

• St. Petersburg State Academic Capella

• Steve Reich and Musicians

• Stroma (musical group)

• ST-X Ensemble

• Sydney Alpha Ensemble

• Symphony Number One

T

• Tambuco

• Tartar Lamb

• Texas A&M Wind Symphony

• Theatre of Voices

• Thelema Trio

• Toimii

• Tokyo Kosei Wind Orchestra

• Topology (musical ensemble)

• Trio Voronezh

U

• University of Chicago Contemporary Chamber Players

• Uusinta Ensemble

V

• Vertixe Sonora Ensemble

• Villalobos Brothers

• Voices of Change

W

• Dale Warland Singers

• Wiener Taschenoper

X

• Xenakis Ensemble

Y

• Ying Quartet

Z

• Zeitgeist (ensemble)