just came to say Timeless and possibly Solfa (possibly? consider: Kimi Tsunagi Five M aka the first) but those were the first replies so I literally went researching to remember more must-listens
Ling Tosite Sigure - just a moment (just a moment is what it took to remember the name of the minialbum with Telecastic Fake Show is not TelecasticFake Show. sorry I only remember covers not names)
Amazarashi - biased of me but wanna say Sekai Shusoku 2116 (2016) Biased bc that’s when I found them out but it hit harder than earlier ones IMO. Consider Boycott though
Ali Project - Psychedelic Insanity (2007) because AliPro was just that weird indie vk-but-not-quite-bc-WoMeNzZzZz band until the whole Rozen Maiden era and then this album which really paved the way for every band like this (think Yousei Teikoku, Kalafina, WDYM I am biased towards Asriel etc)
Monkey Majik - Sora wa Maru de (that’s how I first heard about them but is it the most influential maybe. yes another 2007 one)
L’arc en Ciel - Kiss (guess the year. no but it’s not biased… well there are so many Ken songs here maybe it is… but hear srssssssss )
Bump of Chicken - Orbital Period (2007) was the platinum in my house (yes we seein a pattern) but not sure how many people agree that is their must listen. Most people might name Yggdrasil (2004)
the brilliant green - the brilliant green (1998) NOW for one rec I never actually got around to listening as of today but it’s in my backlog as I hear it was … something. I was just listening to Tomoko Kawase solo stuff and literally only a few the brilliant green songs but it seems good anyways Tommy Heavenly6 (2005) is platinum in my earphones
Aqua Timez - Carpe Diem (2011) although my favorite song is not there so difficult pick but its so solid criminally underrated band so who knows if its considered a must listen by anyone but me lmaooo
Polysics - probably Karate House would be the popular pick but We ate the machine was the platinum in my home so
Polkadot Stingray - Zenchi Zennou (2018) is a platinum to me but is it to everyone else? just found a really passionate review of it so maybe and not just the songs are A+ the visuals too … its a mood.
Honorable mention to Iceman bc DA’s obsession with striking down every pirated content is amazing so no real opinion on an album but a must listen band or just listen to Access aka japanese Erasure as @tsundairy aptly put
Honorable mention to Kinoko Teikoku’s Long goodbye but always felt like theyre the sorta band more loved by foreigners than in Japan
these should be more than enough though I keep thinking of bands or albums that are must listens in my heart but likely not to anyone else (Seamo’s debut album if we calling that rock, Adventure by Monobright which was a triple platinum here, Unison Square Garden’s self titled which literally only made waves in my home and Me and Your Borderline by Last Alliance to name sum )
and then there are a lot of bands that come to mind as must listen but I never listened to much whoops. thinking classic poprock ones like Judy and Mary (all I know is the sunshine track) Princess Princess (all I know is they inspired that BLs name) Chage & Aska (lol all I know are the tabloid stuff) etc I once even got a pack of cds to change that but do u have a player of 80mms yea me neither. it’s around somewhere