The Young Person's Guide to Becoming a Rock Star

Who did the singing for Gerard Butler? I know it wasn't him. Sounds definitely dubbed. But some people think he did sing it. I am sure he didn't sing anything on film until Phantom AFTER he had singing lessons. Sure, he sang after this TV series in a band on stage but that was just for fun,not professionally, and besides he and the band were probably as drunk as the audience. And what songs did he sing in this? Can someone list them? Someone put The First Time Ever on You Tube and said it was from Lucy Sullivan is Getting Married with scenes from that show, but I don't think he did any singing in that show either. I think it was from this TV show. Can anyone clear this up?