What is the best player to play the YS2 music you wanted to hear recordings from?
I have uploaded a Alpha Mission recording, please remember Gimic play it using OPL3 and even if OPL3 claims to be OPL1/2 compatible so does it not always sound identical.
You could compare by switching OPL3 and OPL2 emulation in Dosbox to hear for yourself the differences.
I used Hoot to play the arcade music from ASO and i don't think the arcade emulation has been updated in a long time in Hoot, so not even a real FM soundchip will solve problems with the emulation of the sound drivers... although ASO sounded ok while other games play badly, like Ninja Spirit (YM2151) wich is bad in both software emulation and even worse on a real YM2151 because of bad sound drivers in Hoot.
Also i think some old versions of MAME do support the ability to play OPL music using a real AdLib/SB card if you have it installed 😀