In-Game - Heartlight PC (DOS)
In-Game is two trance tracks played during actual gameplay or attract mode.
Both tracks were recorded from the pre-Epic Games shareware game on a Pentium 60 MHz with a Sound Blaster 16 CT1740. Every couple of minutes, a loud click occurs, so multiple recordings were made until no click could be heard.
The first track consists of 20 patterns named !a.snd to !t.snd and played at 8522.7 Hz in this order (line breaks added by VGMPF for legibility):
lllljjjkababdedemnmnghgisssstttt aaabeeefopopghghmnmnghghscstscst cacbcdceqrqrhhhhjkjkghgisbsbsbst aeaendndncncnnnfsbsjsbskstststsi adadbdbfrqrqhghgopophghistscstsc abdeabdfotothhhisssjssskstskstsc.
If less than 600032 (pre-Epic) or 550032 bytes (Epic) of conventional RAM are free, the game replaces 6 patterns by others, resulting in this second track:
jjjjjjjjaaaaeeeemnmnhhhisssstttt aaaaeeefopophhhhmnmnhhhhscstscst cacacecerrrrhhhhjjjjhhhisasasast aeaenenencncnnnfsasjsasjstststsi aeaeaeafrrrrhhhhopophhhistscstsc aaeeaaefotothhhisssjsssjstsjstsc.
The driver supports halving patterns, which would have saved many kilobytes, but the game does not use it.
The percussion is recognizable from Microsoft GS Wavetable Synth, and the bass also sounds like its Synth Bass 1.