>>28604573Rock, retard.
Indie means the band/artist/etc. isn't on a record label.
Alternative is an umbrella term used for any kind of music that isn't extremely popular, bands like Nirvana and Green Day were known as alternative back in the 90s. The thing is though, these bands are now being heralded as "real music" by teenagers with internet connections, and now they're in the same tier as Queen or Led Zeppelin. Alternative in 2016 could describe bands like Swans or Can. Sure they're appreciated in their own circles, but try going to a party and playing Vitamin C as opposed to Smells Like Teen Spirit, or telling a cute normalfag girl The Seer is your favorite album.
I'm not sure why you'd bring up Coldplay, though, considering they've always made radio-safe rock.
i'm really fucking tired so if none of this makes sense then that's why>>28604916I don't feel like typing it out so here
https://en.wikipedia.org/wiki/Math_rockGood examples are Slint, Don Caballero, and Hella.
