Ah, Spectrum Holobyte. Such a great version of Tetris. Sadly it doesn't run under SheepShaver (hangs SheepShaver), and the music, arguably the most unique part of that version, didn't work under Classic. I downloaded WAVs of it a while back and used them as various ringtones for a long time. Level 2 in particular (Volga Boatman) was really good.