There's another that, truth be told, is my favourite singer. Ryann Donnelly, formerly of the band Schoolyard Heroes. She's got an incredible voice and probably the largest range I've heard from any non-operatic singer.

However, their songs are in a genre of music that is definitely not to most people's taste: Horror Punk (think bands like the Cramps and the Misfits). That's why I didn't mention her before.

If you're interested, check out pretty much anything off the "Abominations" album; most of it's on youtube.