It always used to annoy me when people said Jonny had only gone on BB3 to get his music famous. If this had been the case surely he would have been singing all the time and acting up to the cameras musically. I even remember a few times when other housemates asked him to sing something and he didn't really want to and was a bit embarrassed.
From what you say Glitterbabe it sounds as though he has a lovely voice and I would have loved to have been there with you to hear him sing.
Good Luck Jonny