Nirvana.

New Radicals made only one album, and it’s probably in my top 10 albums of all time.

System of a down. I mean they're not gone but they've only produced music for like 6-7 years and nothing since.

Sublime.

Whoever performed the theme song for Sealab 2021.

Presidents of the United States of America

aka POTUSA

Blind Melon

Shannon Hoon went out way too soon.

I always liked the band Jellyfish.

I just took a gander over to Wikipedia to learn why they broke up. It was there where I read one of the best break up write ups ever:

"During the tour for Spilt Milk, Sturmer and Manning grew increasingly distant as friends. On their return home, the two songwriters independently wrote material for a third album, provisionally titled Nausea Trois. By then, they were drifting apart musically. Manning remembered that, prior, they would bond over albums such as Paul McCartney's Ram or the Zombies' Odessey and Oracle; however, "it was clear that none of that was happening anymore." He said that he was "rediscovering my love of [...] high-energy, fun melodic pop with attitude. And Andy was Leonard Cohen. That was it." When Sturmer presented him a country ballad song, he accordingly "left in tears because I had zero interest in recording it." Sturmer felt that Manning had outgrown the partnership, and for his part, was fearful that Manning's new songs would likely inspire journalists to persistently compare the band to Alice Cooper."

Really paints a picture!

They were a good band while it lasted.

https://youtu.be/RTrfvwpX9g0

Also...In 2004 or 2005, Coachella organizers invited Manning to reunite Jellyfish for a one-off performance at the festival. Manning advised the organizers to consult Sturmer first. Sturmer, through his lawyer, responded he would not accept the offer regardless of any amount of money involved.

Woah!!

The death of Mark Sandman (such a great name) on stage, 24 years ago, brought an end to Morphine. No other band can match the imagery and atmosphere of Noir as well as they could. You could also feel the evolution of their sound from their last album The Night.

Slint. They broke up before dropping one of the greatest, most influential albums of all time.

Traveling Wilburys. I know a supergroup of old guys is kind of cheating as an answer to your question. But it's a shame they weren't able to record more.

Juice WRLD. Was introduced to his music about a year after he died, and was bummed there wouldn't be any new songs from him.

Jeff Buckley

Frightened Rabbit. Good body of work still but would have loved to see them keep going. Their music really hit close to home. Plus I only learned of them several months after Scott Hutchison’s suicide. What could’ve been.

Jane's Addiction.

Mother Love Bone: broke up before they'd released their first album. RIP, Andrew.

Also, School of Seven Bells (RIP, Ben)

Mad Season

Power Trip. I don't even know what happened to the guy but I'll respect the family's privacy.

Can we include Trevor Moore in this discussion?

2 albums of music in addition to the wkuk (which had songs as well)

Story of out times

High in church

The original Drowning Pool.

Death

I would love to hear the songs Chuck would have written about the current state of the world. Stuff like 1,000 Eyes always gets me when I hear it today.

I don't have any bands that just... Disappeared after releasing a banger or two, but I do lament how Kings of Leon drastically changed after their first album.

Loved the way the singer sounded on that first album. But the subsequent releases sounded like a totally different singer and band and musical style, and I don't like them beyond their first album.

No wait... I do know of a couple bands that disappeared way too soon. Fastball, who was deemed "too ugly for music videos" when MTV was at its height making it difficult for them to go anywhere, and Blind Melon, whose frontman died at a young age and kinda destroyed the band.

Here is an alternative Piped link(s): https://piped.video/watch?v=1EdUjlawLJM

Piped is a privacy-respecting open-source alternative frontend to YouTube.

I'm open-source, check me out at GitHub.

Birmingham's own Nineteen Forty-Five. Not sure what happened; a couple of the members went on to backup Amy Ray for her solo career, another released her own solo album.

Two amazing albums and handful of other releases.

The Bravery. Only got to see them once but it is one of my fondest shows

Miser

https://youtube.com/playlist?list=PLIwkFNxj5qU803iy7Vtw-6VPkDCc2wmHL

They put out one album and I love it. They don't seem to be interested in doing another one.

Memento

https://youtube.com/playlist?list=PLbsObMjR8kdheo0ECRmB6v0i7ZLfodIeT

I found them years after they broke up and am sad. Love this album.

Jellyfish. Would’ve been interesting to hear how their sound evolved over time. Same fi Dee Lite — Dewdrops In The Garden was a cool album. I wish they’d get back together even if just to make one modern LP.

Acid Bath. Their bassist died in a car accident after they released two of the best, most unique metal albums of all time imo. I still listen to them regularly. Sammy went on to do Goatwhore. The vocalist had other projects I wasn't fond of. But still one of the best bands of all time for me.

I’d say Velvet Revolver. With most of the Guns N’ Roses lineup without Axl and with Scott Weiland (RIP) on vocals, broke-ass, 9th grader me downloaded that whole album on dialup (my family couldn’t afford high-speed at the time). And boy in 2004 did I listen the shit out of that burnt CD. They later released Libertad in 07’. It was okay..

Afterwards, Weiland left and by the time he passed away, I had forgotten about them. So I went back and damn did Contraband still held up. It comes up in my mixes from time to time.

The other one was kind of cheesy. Does anyone remember Battle for Ozzfest? The MTV show around 04, 05ish? Well, the band that had won was A Dozen Furies. They were a metal-core type of band (product of the time). But I absolutely loved their music at the time. However, by 2006 they had disbanded.

But I think I like them more because a friend of mine, somehow knew one of the members from a forum that my friend ran, or something like that. Anyways, because of that he got Ozzfest tickets, which I had no money for at the time, and I had an absolute blast there. Drank my first beer under the table, my virgin ass made out with a girl, had a Marine tease me for not being able to do pull-ups, rocked out all day, and got burnt with a cigarette in a circle pit (still got the scar).

I did meet the guys at the meet n’ greet tents, got a random sampler CD autographed and they seemed all around cool dudes! So thanks A Dozen Furies, you guys indirectly made my poor ass have an absolutely awesome time that summer!

PS: I don’t really listen to metal that much anymore. Unless I’m working out or something. But I go back to those albums every once in a while.

Probably not very well known compared to others I see here, but I was a huge fan of the band Girls when they released there first album in 2009, an EP in 2010, and finally the last album in 2011. I got to see them play either in 2011 or 2012 which I am still happy I did to this day. They broke up in 2012 after playing a festival and that was it. From my understanding the lead singer didn't want to continue and then pursued another project a few years later, which was absolutely awful if you ask me. He also was known to get into bad patches of drug use and dissappear for periods of time. In 2020 his long time friend and band member of Girls died. He had another side project that didn't take off (but does sound better than the first) and now I have no idea what he is doing. At this point I doubt the band will ever get back together from the sounds of it, especially since one of the members died.