Two ¼ inch tapes. Animated Sd #2A 24 cycle scale Tape one 24 Cycle scale and there is also a short tune. b) 1 t 2 The short tune is not slowed down. 15 IPS. Tape two the 24 cycle is slowed down four times i.e. two octaves. The little tune is also slowed down four times. Good for showing the effect of changing speeds. (See reference to FI12777.X04)