At the Drive-In reunites and puts out one of their best albums and then immediately breaks up again (In•ter a•li•a, 2017)
Neutral Milk Hotel puts out one of the most influential indie rock albums of all time and then Jeff Mangum vanishes into the fucking ether forever (In the Aeroplane Over the Sea, 1998)
Chumped is formed, puts out one EP and one Album and then breaks up (Chumped EP, 2013 & Teenage Retirement, 2014)
Oh also Billy Corgan's ego inflates to the point that that the Smashing Pumpkins are ruined forever (everything after Machina II: The Friends and Enemies of Modern Music, 2002)