How to Find the Tunes?

So sometimes the broadcasts of pro games play some pretty sweet tunes during the intermission periods. I heard a song during one of these broadcasts that I liked the sound of, but Shazam wouldn't identify it and I couldn't find it listed anywhere in the broadcast. (There wasn't any singing either so no way to look up the lyrics.)

Is there somewhere that Riot attributes the music they play? I think this would be a great avenue to promote the professional scene further as it also gets the artists a little more publicity and record companies might hint at their involvement with LoL.

PS If I were to be so lucky to have a Rioter read this, is there a version of "Burning Bright" without the singing? I'm not much of a fan of anime or the "anime genre" of music, but I love the intro with the soft vocals sans lyrics. It's very pretty and soothing, and I enjoyed hearing the first 15 seconds of "heavenly" sound when logging in on the Star Guardian menu.