Maybe this proves rock stars really are just like us.
Dave Grohl admits he was worried about getting fired from Nirvana.
Grohl says he was nervous he "was not good enough" to keep his job as drummer for the iconic grunge act.
By the time he joined the band, he was their fifth drummer.
"So I was doing my best to keep this thing from going away. So there was this real insecurity that I had - I'm not good enough. They're going to find somebody else."
Grohl then, of course, went on to form his own hugely successful band, Foo Fighters, after the death of Kurt Cobain.