Christina Aguilera You Tube is a good source for proof of whistle register singing Singers have been added back onto the whistle register list because of proof from youtube Stop spoiling people s fun Proof is proof no matter where is it from And don t bring up the subject about deaf people because it has absolutely nothing to do with this deaf people wouldn t remove people from the whistle register list becaues they are unable to verify but people who aren t are able to verify like you So stop manipulating and vandalising wikipedia We were all happy until you came along Leave us alone