Anna Ash

The first impression of Anna Ash's These Holy Days album is her distinctive, boldly quirky singing - soulful, pliable, and off-center, comfortable in breathy coos and pointed, high-pitched peaks. The title track features a piercing vibrato that's ethereally visceral, both heavenly and a bit frightening. That's the kind of voice that sounds like a natural extension of personality honed over a lifetime, an idiosyncratic instrument that nobody ever had the heart to constrain or correct.

But in a phone interview this week, Ash - who will be performing at Rozz-Tox on December 16 and recording a Daytrotter.com session the next day- revealed that she only discovered this marvel over the past five years, and she's still exploring it.

"I didn't really even know what my voice sounded like until I was like 19 or 20 years old," she said. " I was very shy about singing as a kid. I was never very good because I was so scared and so nervous."