Urban birds for two pianos and disklavier - Sierra, Arlene Elizabeth 1970- (Cecilian Music, 2014)
Performance notes in English. - Duration: ca. 14:00. - Technical specifications are as follows: 2 grand pianos, 1 disklavier, 4 microphones, 4 headphones, laptop, MIDI and audio cables, mixing desk for microphones and laptop, stereo speakers, amplification system