Yes. I have been following Adam from the auditions on Idol. He first got my attention with his amazing forsetto in the group 'Hollywood' stages, and then in the following episode his renditon of 'Believe' by Cher. He does an excellent vocal ad-lib at the end of the rendition which almost made me cry. He has amazing control and in a fine example of a very good trained singer.
He has one of, if not the, best voices I have ever heard in my life.
http://www.youtube.com/watch?v=gZSHm4x4TGk
Watch this whole video. But please pay close attention to his singing from 2.00 in to the tune. 2.40 demos some brilliant control and I think that every musician should listen to good singers like this.
People bag on him for being too over the top. I dont think that he is to be honest, perhaps its becuase I'm used to listening to Yngiwe, David Lee Roth - and the whole list of 'OTT' bands. But I think Adam is a real tallent that you dont see very often.
Chris