Parts for ROCK TRIAL
| Name | Voice | Description |
| Judge | Baritone, limited range, no big singing voice required. | James Brown, funky, bigger/older/more dominant male. |
| Plaintiff/Angelina | Soprano, proper. | Vivacious, pushy and sexy, strong, shameless. |
| Defendant/Edwin | High Baritone/Tenor. | Punky, young, lippy, Green Day, modern pop star. |
| Counsel | Soprano or Tenor (optional A flat) | Bit of acting-up to the jury. |
| Usher | Bass/Low Alto | Introduces and sets the scene. Cool and strong. |
| Foreman | Anything - only sings one line. | In the jury, has one line. |
| Cowgirls (3) | Soprano/Alto, no extremes of range but must be able to hold harmony lines well. | Angelina's groupies, will do harmony number for her entrance and maybe a bit of a dance. |