Most Appearances (Performer)
| Name | Role(s) | # |
|---|---|---|
| 598. Rosie Tucker | Acoustic Guitar, Vocals | 1 |
| 598. Ross Craib | Drums | 1 |
| 598. Ross McReynolds | Drums | 1 |
| 598. Rostam | Featured Artist | 1 |
| 598. Rostam Batmanglij | Guitar, Harmonica, Vocals | 1 |
| 598. Roy Ayers | Musician | 1 |
| 598. Roy Dyshon Warren | Choir | 1 |
| 598. Roy Pattern, Jr. | Vocals | 1 |
| 598. Royal Masat | Background Vocals, Bass | 1 |
| 598. Royal Thunder | Featured Artist | 1 |
| 598. Ruban Nielson | Guitar, Vocals | 1 |
| 598. Rubblebucket | Featured Artist | 1 |
| 598. Ruben Royster | Bass | 1 |
| 598. Ruben Vanhoutte | Drums | 1 |
| 598. Rubin Kodheli | Cello | 1 |
| 598. Rubio | Vocals | 1 |
| 598. Ruby Ibarra | Vocals | 1 |
| 598. Ruby Ibarra, 2025 | Featured Artist | 1 |
| 598. Ruby Wang | Violin | 1 |
| 598. Rudresh Mahanthappa | Alto Saxophone | 1 |
| 598. Rudy Bird | Percussion | 1 |
| 598. Rudy Royston | Drums | 1 |
| 598. Rufus Wainwright | Featured Artist | 1 |
| 598. Rulo | Vocals | 1 |
| 598. Ruly Herrera | Drums | 1 |