She collaborated with eminent conductors such as Hermann Scherchen, Pierre Monteux, Erich Leinsdorf, Rudolf Kempe, Gennady Rozhdestvensky, Aaron Copland, Rafael Frühbeck de Burgos, Charles Mackerras, Jean Fournet, José Serebrier, Moshe Atzmon, Antoni Wit and Hiroyuki Iwaki.

Biret also gave concerts at the festivals of Berlin, Montreal, Istanbul, Dubrovnik, Montpellier, Nohant, Persepolis, Royan and Athens.

Idil Biret had her US concert premier at Symphony Hall in Boston under Erich Leinsdorf on Friday, November 22, 1963.

Just before she was to play (Rachmaninoff Piano Concerto #3), Maestro Leinsdorf addressed the audience, saying that "we have just heard on the wireless that the President of the United States has been the victim of an assassination!"

[4] She has been a jury member at several piano competitions: Van Cliburn (US), Queen Elisabeth (Belgium), Montreal (Canada), Liszt (Weimar, Germany) and Busoni (Italy).

Her numerous recordings (more than 100 to date) for labels such as EMI, Decca, Atlantic, Finnadar and Naxos include the Saint-Saëns' piano concertos nos.

In the 1980s she performed in two series of concerts Beethoven’s 32 sonatas and the piano transcription (Liszt) of all the 9 Symphonies, the latter broadcast live by Radio France.

In 1997 she played all the solo piano works of Brahms in a series of five recitals in Germany during the composer’s centennial anniversary.

Biret is the only pianist to have performed all of Beethoven's piano sonatas, concertos and Liszt transcriptions of the nine symphonies in public concerts.

After Duyar died, the fate of the bust was unknown for some time until it resurfaced when Şefik Büyükyüksel, the spouse of Biret,[7] discovered a photo of it online in the private collection of Dr. Baha Toygar who had bought it from a gallery owned by Emel Say.