Although I don't know if he played in the band, you can't believe everything you read on the internet or with what these actor types say....
DJ tries to pass himself as much younger than he really is. His bio on IMDB says he was born in 1978. Nice try though, because he was in school at Tullahoma frome elementary through his sophomore year in high school which was in 1990. That would have made him 12 years old.
He is really about 32. Not the 28 he tries to be. Not such a big deal know but when he first started, probably pretty big.
Also, he was perfect for "THe New Guy" because he was a total geek.