My 9 albums are perhaps the most different from anyone else here, because I'm Gen-X and grew up in the 80s, so my favorites that influenced me the most (as a musician and as a music lover) in my formative years were 80s and 90s Japanese music.
Haneda Kentaro - Macross the Complete - My favorite anime soundtrack of all time. Just a gorgeous jazz fusion meets epic orchestral score, which includes cues from the TV series and the movie.
Kawai Sonoko - Rouge et Bleu - This is the album where she fully transitioned from an idol into a serious musical artist. The most elegant pop I have ever heard in my life. The opening track alone gives me the chills with its darkly dramatic opening.
Makaino Koji - Bubble Gum Crisis 3: Blow Up - All of the original Bubble Gum Crisis OVA series soundtracks were amazing, so it was nearly impossible to pick just one, but this one just very slightly edges out the others. Some of the best cyberpunk synth+rock ever.
Psy-S - Mint Electric - So many good albums from them, so it was hard to choose, but I had to pick at least one. The best Japanese experimental art pop of the 80s.
Boowy - Gigs - Probably the greatest rock band to ever come out of Japan, and influenced so many of the rock bands that came after. This being a live album is all the more impressive, as they were so tight and raw as a live band.
Anzen Chitai - Tsukini Nureta Futari - Another band that has so many good albums, but this one has a few of my all-time favorites from them. Maybe the greatest Japanese mainstream band ever.
Morikawa Miho - Freestyle - One of the best Japanese female vocalists of the 80s and 90s, and is now a musical performance professor at Osaka University of the Arts.
Sakamoto Ryuichi - Illustrated Musical Encyclopedia - Probably the greatest composer to ever come out of Japan, and one of the most beloved "musicians' musician" globally.
B'z - Loose - Another Japanese rock juggernaut that's still going strong after all these decades. This is perhaps their greatest album ever--just incredible hard rock blended with other genres.