tells rolling stone in revealing interview how she was never a fan of her father 's band , preferring oasis .
speaking about the documentary film she executive produced montage of heck she says her dad ` never wanted to be the voice of a generation '
suggests he killed himself because ` the world demanded he sacrifice every bit of himself to his art '
says his former band mates are freaked out by how much she looks and sounds like him .
kurt cobain was found shot dead in his home exactly 21 years ago on wednesday , aged 27 .