1. Aa (pronounced ‘big a little a’) 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 “Essential Entertainment” EP in 1981. In 1994 all 4 songs were re-released on the “4X4” sampler on the Antler/Subway Classix label, together with 4 tracks by De Brassers, Struggler and The Cultural Decay.
In 2009 the Brooklyn label Softspot Music re-released the EP on vinyl in an edition of 500 numbered copies.


3. AA (Double A; 더블에이) was a boy group under Wellmade StarM. They debuted on November 3, 2011 with the single "So Crazy".


4. Aa, also known as ツーA and Aa / ツーA, is a Japanese vocal synth music producer.
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