| 554. Antonio Parker | Saxophone | 1 |
| 554. Antonio Sánchez | Drums | 1 |
| 554. Antonio Sánchez & Bad Hombre | Featured Artist | 1 |
| 554. Antonio Z. Rivera | Bass, Tuba | 1 |
| 554. Antonio Zepeda | Tuba | 1 |
| 554. Antony Granados | Keyboard | 1 |
| 554. Antwan "Ace" Daniels | Vocals | 1 |
| 554. Anwar Sawyer | Keys, Musical Direction | 1 |
| 554. Aoife O’Donovan | Acoustic Guitar, Vocals | 1 |
| 554. Apache | Guest Vocals | 1 |
| 554. Aquiles Navarro | Synth, Trumpet | 1 |
| 554. Arborea | Featured Artist | 1 |
| 554. Archie "Hubbie" Turner | Keyboard | 1 |
| 554. Archie "Snoop" Pearson | Bass | 1 |
| 554. Archie Avantgarde | Trumpet | 1 |
| 554. Archie Knuckles | Trumpet | 1 |
| 554. Arecio Smith | Keys | 1 |
| 554. Arei Sekiguchi | Foot Drum, Timbales | 1 |
| 554. Ari Burns | Trumpet | 1 |
| 554. Ari O'Neal | Guitar | 1 |
| 554. Ari Shapiro's Favorite | Featured Artist | 1 |
| 554. Ari Teitel | Guitar, Vocals | 1 |
| 554. Aria Cheregosha | Viola | 1 |
| 554. Arianna Powell | Guitars | 1 |
| 554. Arianne Urban (Violin) | Musician | 1 |