my voice is shot

so i was talking a lot at work yesterday, which is already odd because i honestly don't talk much. that made my voice a little scratchy. then my friends came over, well 2 out of the 3 because one of them was being an anti-social freak, and we decided to play rockband and do karaoke for 4 hours straight.

i don't think i have ever sang so much britney and n*sync in my entire life. we also did a lot of michael jackson. the kid is not my son, bitches.
this morning my voice is completely shot. i don't know how singers and performers talk/sing all the time. it does not work for me.