No, Not Julius and Ethel Rosenberg

I'd never actually heard of the band The Rosenbergs before. I wonder if they're actually named after the couple...
Anyway, their song "Birds of a Feather" (which I think is a cover... maybe) was another opening song for the show "Castle." I don't much care for most of the songs they have (not that I don't hate them; I just don't particularly like them), but this, like "Jezebel," is one of the ones I actually do quite like.