http://archives.tg-16.com/music_database.htm?col=notes&val=laser Vajra - This is slightly better music than the sequel. The composer is Yasuhito Saito, who did the very nice soundtrack for RAYXANBER (the first game, on FM-TOWNS).
Vajra 2 - Sadly, lots of SFX are part of the audio tracks...the worst offender is the track with "MECH WALKING" SFX for nearly the entire track.
JB Harold Manhattan Requiem - the opening track is amusing (with all the voice acting), but the "jazz" is actually totally fun. I have listened to this a lot since it doesn't get as tired as other soundtracks.
http://archives.tg-16.com/music_database.htm?col=notes&val=laserThe sound quality is far from perfect, but until I get source files, this is better than nothing.
LaserActiveGuy provided this two years ago! Sadly, he recorded the tracks with lots of clipping. Oh well. Like I said, better than nothing!
NOTE: These are the only three PC Engine LaserActive Games that exist! They did not make any more LD-ROM games, sadly...