Maestro W-3. Demonstration Record 1971
6:03
Maestro Fuzz-Tone FZ-1. Demonstration Record 1962.
3:12
Maestro Rover R0-1. Demonstration Record 1972
5:05
Maestro Rhythm N Play function demo
5:15
Maestro Woodwinds. Demonstration 1967. S. 2
13:09
『未知へのサウンド冨
2:58
Maestro Echoplex. Demonstration Record 1972
10:53
The New Sound Of Music 1979 (Part 1)
2:22