At a Loss for the Blues

So a couple of days ago, I actually saw and heard some really GOOD performers while waiting at Downtown Crossing for the Orange line. 2 guitarists, one of them singing, sounding a little John Mayer-esque, a little blues-ish. I actually have no jokes about them, accept that I can't find them! They said they were called The Scappers and are on facebook, but no luck so far :-(