I don't think music is dead - radio has just progressively become worse and worse. There is some talent on the radio but it is slim pickings. I honestly don't mind Ke$ha due to her party vibe as well as Flo Rida, but I can't stand shit like Lil' Wayne, Nicki Manaj, Linkin Park (no offense up there), Nickelback, the list goes on.
However, the indie movement of the 2000s has spawned great bands... some of the more popular being bands like
Grizzly Bear and
Passion Pit. Also love me some
Blitzen Trapper.
Stoner metal is great, too... for example,
High on Fire (I love squats and deadlifts to that one). My good buddy is in a great stoner band
Wo Fat.
The newer 80ish retro vibe that's come back isn't too bad, either... for example, MGMT, Capital Cities, etc.
In terms of rap, I love Kid Cudi's new one...
like this and
this.
So I wouldn't say rock is dead at all. I did love the 90s grunge... Alice in Chains'
Dirt album is one of my favorites, earlier Soundgarden i.e.
Badmotorfinger (be sure to check out Johnny Cash's cover of
Rusty Cage after listening to that one), and
Jane's Addiction.
There was a span of about 5 - 8 years where modern music was wavering in terms of finding itself in the early 2000s, but it is far from dead.