Why are the works of some contemporary song composers included but the arias from Turandot are missing?
It is all about the publishing date of the text of the work. Many contemporary composers set texts that were published before 1923. In these cases, the music of the composer is under copyright but the text is in the public domain according to US law. Turandot did not premier until 1926; neither the music nor the text may be printed without the permission of the publisher, Casa Ricordi.
