Nobunaga's Ambition - Reppuuden (1999)(Koei) Pro Mahjong Kiwame D (2000)(Athena)
I must say that both games have very nice scores.
Also, since I recall RB being kind of pissed with not being told about HES+ADPCM, I'd just like to mention that a recent NEZPlug++ build added VBlank+Timer mode for GBS files, needed by some newer rips (that were only possible with GBR format previously). More info here: http://www.angelfire.com/nc/ugetab/nezplug.html (scroll to the bottom of the page).
Oh, and while we're on the GBS topic, here's my updated collection: http://2sf.hcs64.com/gbs/ (!Game Boy Music.rar has everything in one archive for easy leeching). Everything nicely organized, Game Boy Color rips marked, alternative region names and developer/porter info where applicable. Should have everything, including latest ugetab rips.