The unique sound and look of the Marching Illini is based on a specific instrumentation. The following is a break-down of our instrumentation:
Total Band Members |
Historic Pregame Performance Block |
| 24 Piccolos | 16 Piccolos |
| 28 Clarinets | 16 Clarinets |
| 24 Alto Saxophones | 16 Alto Saxophones |
| 16 Tenor Saxophones | 8 Tenor Saxophones |
| 70 Trumpets | 56 Trumpets |
| 24 Mellophones | 16 Mellophones |
| 40 Trombones | 32 Trombones |
| 20 Baritones | 16 Baritones |
| 24 Sousaphones | 16 Sousaphones |
| 36 Drumline | 30 Drumline |
| 28 Guard | 24 Guard |
| 28 Illinettes | 24 Illinettes |
| 1 Feature Twirler | 1 Feature Twirler |
| 3 Drum Majors | 3 Drum Majors |
| 8 UGStaff | |
| 274 Total |