This is ONE OF 2 responses to volume 4, Holly Card Number 26 ("Tetris")...
While hardly qualified to judge the quality of music programs, I must confess to being taken with the one I've had a chance to play with, namely Practica Musica. Included in this nifty program are:
Ear training: Intervals
Ear training: Melodies
Jo and I played with it for an hour or two one night when we really should have been packing. She was impressed; I was impressed and overwhelmed.