- A Change Of Pace
- A Day To Remember
- A Farewell Rescue
- A Fine Frenzy
- A Heartwell Ending
- A Life Once Lost
- A Perfect Murder
- A Static Lullaby
- ADULT.
- AFI
- AM
- Abra Moore
- Action Action
- ActionReaction
- Acute
- Adair
- Adam Freeland
- Add N to X
- Adem
- Adema
- Adrien
- Aesop Rock
- Against Me
- Agalloch
- Aiden
- Aimee Allen
- Air
- Alabama Thunderpussy
- Albert Hammond, Jr.
- Alesana
- Alexisonfire
- Ali Lohan
- Alien Crime Syndicate
- Alison Ray
- All India Radio
- All Smiles
- All That Remains
- Allhelluja
- Allister
- Alter Bridge
- Ambulance Ltd
- American Eyes
- American Head Charge
- American Princes
- American Speedway
- An Angle
- Anaka
- Anberlin
- Anders Manga
- Android Lust
- Angela Desveaux
- Ani DiFranco
- Animal Collective
- Annihilator
- Anti-Flag
- Antony and The Johnsons
- Anubian Lights
- Apollo Sunshine
- Aqueduct
- Arab Strap
- Arbouretum
- Arcade Fire
- Architects
- Architecture In Helsinki
- Arctic Monkeys
- Arizona Amp and Alternator
- Armor For Sleep
- Army of Anyone
- Art In Manila
- As Cities Burn
- As Fast As
- As I Lay Dying
- Ash
- Ashes of Your Enemy
- At The Drive-In
- Athlete
- Atreyu
- Au Revoir Simone
- August Burns Red
- Autovein
- Avalon Superstar
- Avenged Sevenfold
- Azure Ray
