Bruno Mars. I can't even listen to him or I seriously get a headache. Like, no joke. An actual headache. It just feels like nails on a chalkboard to my ears
Adam Levine, Justin Timberlake (grating falsetto & can practically hear the douchey-ness), Ke$ha, and Miley (if a voice is capable of sounding both white & corny they have achieved it).
