| Date Start | Name | Time Start | Time End | Status |
| 11/30/2010 (Tue) | GPHS Winter Percussion Rehearsal | 6:00 pm | 9:00 pm | Active |
| 12/07/2010 (Tue) | GPHS Winter Percussion Rehearsal | 6:00 pm | 9:00 pm | Active |
| 12/09/2010 (Thu) | GPHS Winter Percussion Rehearsal | 6:00 pm | 9:00 pm | Active |
| 12/14/2010 (Tue) |  GPHS Winter Percussion Rehearsal |
6:00 pm | 9:00 pm | Cancelled |
| 12/21/2010 (Tue) | GPHS Winter Percussion Rehearsal | 6:00 pm | 9:00 pm | Active |
| 12/23/2010 (Thu) | GPHS Winter Percussion Rehearsal | 6:00 pm | 9:00 pm | Active |
| 12/28/2010 (Tue) | GPHS Winter Percussion Rehearsal | 4:00 pm | 9:00 pm | Active |
| 12/30/2010 (Thu) | GPHS Winter Percussion Rehearsal | 2:00 pm | 9:00 pm | Active |
| 01/04/2011 (Tue) | GPHS Winter Percussion Rehearsal | 6:00 pm | 9:00 pm | Active |
| 01/06/2011 (Thu) | GPHS Winter Percussion Rehearsal | 6:00 pm | 9:00 pm | Active |
| 01/13/2011 (Thu) | GPHS Winter Percussion Rehearsal | 6:00 pm | 9:00 pm | Active |
| 01/18/2011 (Tue) | GPHS Winter Percussion Rehearsal | 6:00 pm | 9:00 pm | Active |
| 01/20/2011 (Thu) | GPHS Winter Percussion Rehearsal | 6:00 pm | 9:00 pm | Active |
| 01/25/2011 (Tue) | GPHS Winter Percussion Rehearsal | 6:00 pm | 9:00 pm | Active |
| 01/27/2011 (Thu) | GPHS Winter Percussion Rehearsal |
6:00 pm | 9:00 pm | Cancelled |
| 02/01/2011 (Tue) | GPHS Winter Percussion Rehearsal | 5:30 pm | 8:30 pm | Active |
| 02/03/2011 (Thu) | GPHS Winter Percussion Rehearsal | 5:30 pm | 8:30 pm | Active |
| 02/08/2011 (Tue) | GPHS Royalettes | 6:00 pm | 9:00 pm | Active |
| 02/15/2011 (Tue) | GPHS Winter Percussion Rehearsal | 5:30 pm | 9:00 pm | Active |
| 02/17/2011 (Thu) | GPHS Winter Percussion Rehearsal |
6:00 pm | 9:00 pm | Cancelled |
| 02/22/2011 (Tue) | GPHS Winter Percussion Rehearsal | 6:00 pm | 9:00 pm | Active |
| 02/24/2011 (Thu) | GPHS Winter Percussion Rehearsal | 6:00 pm | 9:00 pm | Active |
| 03/01/2011 (Tue) | GPHS Winter Percussion Rehearsal |
6:00 pm | 9:00 pm | Cancelled |
| 03/03/2011 (Thu) | GPHS Winter Percussion Rehearsal |
6:00 pm | 9:00 pm | Cancelled |
| 03/08/2011 (Tue) | GPHS Winter Percussion Rehearsal | 6:00 pm | 9:00 pm | Active |
| 03/10/2011 (Thu) | GPHS Winter Percussion Rehearsal | 6:00 pm | 9:00 pm | Active |
Tandem
