I really don't think he's singing well, it's just that his standard of singing is so fucking low. The melodies are simple as hell, he relies heavily on drawing out the notes and he throws on that ridiculous vibrato - That, and he's pitch corrected quite a lot. His actual voice foundation sounds crap as well. Some just don't have a good voice. He's one of them. Just call Vescera, damnit. Or any professional singer that can sing old school Yngwie material well.Haven't analyzed the performance, if it sounds good it is. It is indeed all Yngwie on vocals, guitar, bass & drum programming.
Don't worry man. If I would choose some Donnington performance. I would go for 1988.Edit: oops sorry @The_7th_one , hadn't seen your post and this one is not meant to be a response to yours or something.