Urbandale High School plays host to 18 bands in competition and the Marching J-Hawks in exhibition this Saturday, September 29, 2012, in the Urbandale Marching Invitational.
The schedule for the day is:
| School | Performance Time | |
| Opening Ceremony | 4:15pm | |
| 1A | Lenox High School | 4:30pm |
| 2A | Prairie City-Monroe High School | 4:45pm |
| 2A | Ogden High School | 5:00pm |
| 2A | Des Moines Christian | 5:15pm |
| 2A | North Polk High School | 5:30pm |
| Break | 5:45pm | |
| 3A | Saydel High School | 6:00pm |
| 3A | Carlisle High School | 6:20pm |
| 3A | Bondurant-Farrar | 6:37pm |
| 3A | Dallas Center Grimes High School | 6:54pm |
| 3A | Clarke High School | 7:11pm |
| 3A | Oskaloosa High School | 7:28pm |
| 3A | Pella High School | 7:45pm |
| Break | 8:02pm | |
| 4A | Indianola High School | 8:20pm |
| 4A | Newton High School | 8:37pm |
| 4A | Roosevelt High School | 8:54pm |
| 4A | Waukee High School | 9:11pm |
| 4A | Southeast Polk High School | 9:28pm |
| 4A | Johnston High School | 9:45pm |
| EX | Urbandale High School | 10:02pm |
| Awards | 10:30 | |