Sibling bands are hardly new - just ask just ask Hanson, Donny & Marie and the Bee Gees - but rarely do they surface this young.

A brother/sister "metal" band — they call themselves Murp — is making the blog rounds, thanks to a rather passionate performance of the original tune, "Don't Brush My Hair in Knots," by its 3-year-old frontgirl.

The childhood trauma of having your knotty hair brushed is now immortalized in punk rock.

The little singer also has an acoustic number on YouTube called "Everything is Pretty." Because it's good for a musician to be versatile.

Let's hope she doesn't abandon her drumming brother, who has been taking lessons, for a solo career.

Murp's sibling non-rivalry makes "going ballistic" quite adorable.