Related Clues:

• Hollers
• Cries out
• Raises one's voice
• Is sure to be heard
• Cheerleading routines
• Roars
• Fan noises
• ''Go, team, go!'' and others
• Cheerleader's repertoire
• Rebel cries
• Makes a long-distance call
• Sounds angry
• Shouts out
• War whoops
• There's a lot of them, by the sound of it