I'm going to guess at: cocaine
I'm not aware of any cases of this particular drug making a positive contribution to any musician's career.
( tangledupinblue hairy badge with moving eyes, Tue 8 Nov 2011, 9:27, 2 replies, latest was 13 years ago)

Nirvana
It made Kurt kill himself

this post is sponsored by MontyBoyce
( Naked Ape call me Caitlyn, Tue 8 Nov 2011, 9:31, Reply)

I don't think that was cocaine
He was a manic depressive heroin addict, with a history of suicide attempts, plus a family history of suicide, who couldn't really get over selling out his "indie" ideals and becoming a product.
Plus he was married to Courtney Love.
( tangledupinblue hairy badge with moving eyes, Tue 8 Nov 2011, 9:34, Reply)

Fine...
B*witched split when a coke deal with Louis Walsh went bad
( Naked Ape call me Caitlyn, Tue 8 Nov 2011, 9:36, Reply)

I wish this was true

( sporters I’m sincerely gratitude to you, Tue 8 Nov 2011, 9:48, Reply)

And his music was shit.

( Agnostic Antichrist Baltimora, Tue 8 Nov 2011, 9:37, Reply)

It really was.
Suicide was the least he could do to say sorry to the world.
( Monty Boyce, My cheese game is strong, Tue 8 Nov 2011, 9:39, Reply)

As you've said previously, that band is proof that death is good for sales

( Agnostic Antichrist Baltimora, Tue 8 Nov 2011, 9:41, Reply)

Black Sabbath's Volume 4 has a dedication to cocaine in the credits;
They were wired to the tits throughout the writing and recording process.

It's also one of their best records. So nerr.
( Monty Boyce, My cheese game is strong, Tue 8 Nov 2011, 9:38, Reply)

Blah blah exception proves rules blah etc.

( tangledupinblue hairy badge with moving eyes, Tue 8 Nov 2011, 9:42, Reply)