1. Aa (pronounced ābig a little aā) began as a three-piece in late 2002. Based in Brooklyn, NY, the now-quintet has built up quite a rep with their rowdy live shows using treated vocals, keyboards, blissed-out electronics and tons of drums. They have releases on Narnack, Cardboard, Deleted Art, Kill Shaman, and Deathbomb Arc record labels. More info: http://www.sleeep.com/aa/recordings.html. 2. AA was a post-punk band from Belgium. They released just one EP, the āEssential Entertainmentā EP in 1981. Read more on Last.fm