Related Clues:

• Mantra
• Medieval rap
• Toil
• "Dee-fense!," e.g.
• Monk's music
• Gregorian music style
• Strikers' rhyme
• ''USA, USA, USA ...''
• Intone
• It bears repeating
• "We want a hit!," e.g.
• Incantatory word
• Utter repetitively
• Intonation
• Word that's intoned