that's what it is in the picture
ZXNet echo conference «music.zx»
Hello, karbofos
The answer to the question what is it?
Strogino Programming Company (SPC) - authors of Strogino Sound Tracker
(music editor for COVOX) and also players for SST and SPC files.
In general, this is BC
http://www.pouet.net/prod.php?which=15892