Chamber Music Prize: Carlo Levi Minzi information: Livio Bollani (Art Director) - Via Martiri Partigiani, 38 ai 27049 Stradella (PV .... Composers are free to specify the instruments and voices required to perform the work. ... The piece must be a cappella or have piano accompaniment (Instrumentation is open to negotiation, but must be approved in advance. ... Voicing must be SATB, SSAA orTTBB The piece must be able to be performed by choruses of all sizes and ranges of abilities.