She used to sing with Damien Rice.

Lisa Hannigan. She's an Irish singer. Used to sing with Damien, but apparently they got in a fight. That's too bad, because I liked him (& them) quite a bit.

I'm a sucker for horned instruments & other elements of creative musicality (which is probably why I love Feist so much). 

This song is ridiculous, too. In a good way.