Short reviews for noteworthy concerts (and links to longer ones).
...And You Will Know Us by the Trail of Dead - FFFFest 2012
Aiden - I'm actually kinda ashamed of this...opened for Anti-Flag
The Airborne Toxic Event - ACL 2011
Amanda Palmer & The Grand Theft Orchestra - a nice mix of upbeat and downbeat
An Horse x2 - Opened for Tegan and Sara; pretty witty and a lot of fun; also ACL 2011
Animal Collective - sadly not a very good live band
Applecore - I loved the trombonists; they were so good!
Arctic Monkeys x2 - Sasquatch 2006; best part was when it started drizzling and the lead singer said "It's fucking raining!" the crowd went crazy :D; also saw them in Cincinatti in 2010
The Architects - boring, generic hard rock
Astronautalis x2 - best part was the freestyle; also FFFFest 2012
Atreyu - meh, not a fan; Review: Metal Madness
Awolnation - ACL 2011
Band of Horses - Bumbershoot 2008
Paul Banks - FFFFest 2012