Let's take a minute to take inventory of the streaming music sites out there now: Spotify, Rdio, Google Music, Rhapsody, Pandora, et cetera; easily a dozen or two. Now enter a new one, co-signed by all four major labels--Universal Music Group, Sony Music Entertainment, EMI Music and Warner Music Group. The details: the site, called Rara, launched today; it's led by Omnifone, a company that powers BlackBerry and Sony's streaming music services, among others; it's an ad-free site that starts at 99 cents a month; it's recruiting artists to make playlists, including Imogen Heap. (More details can be found here.) But the real question: which one of these inspired its name?

A) RAR--a file format frequently used by people who illegally download albums.

B) Any number of earworms: "...ah-ah-ah, roma, romama...," "...like a dungeon dragon!" "..sis boom bah," let your mind name the rest.

C) Haitian festival music.

D) Indie band Ra Ra Riot.

You decide. Meanwhile, we're going to need a few minutes to take care of B).