How does Kurt Cobain change his voice in the Bleach album?

All the vocals in that album are so different than Nevermind and In Utero... Especially Negative Creep and Beeswax. How does he change his voice to get that weird half-growl half-scream thing?How does Kurt Cobain change his voice in the Bleach album?
it's called TALENT



=)



R.I.P. KurtHow does Kurt Cobain change his voice in the Bleach album?
Everybody has the ability to change their sound of voice.



';The vocal folds, in combination with the articulators, are capable of producing highly intricate arrays of sound.[1][2][3] The tone of voice may be modulated to suggest emotions such as anger, surprise, or happiness.';



-wikipedia.
Actually that was their first record so he changed his style for the follow records Never mind and In Uteri that's what common sense tells me not saying you dint have it =)



EDIT: Oh do you mean his technique? I dint know not sure.



Okay, i see well maybe he was trying to get more aggression out from his voice maybe he was trying to go for a more Punk style vocals and then later changed his mind to mellow it out a little for the following records
Daddy's little girl ain't a girl no more, Daddy's little girl ain't a girl no more, ahhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh?in all seriousness ive no idea dude, Kurt was very unique in his voice. Hard to copy that!!