Can she sing good or bad?

Question

my daughter singing

http://www.youtube.com/watch?v=KhsDvuEtHA4

Answer 1

She has got a really powerful voice for such a small person! Great Job!

Answer 2

It's definitely a great start, especially for grade 5.  Her voice itself is really good, but she's really out of tune in this song.  ("Can she sing WELL or BADLY?" sorry if it seems obsessive, but I have big issues with grammar, especially when people don't know the difference between an adjective and an adverb...)