Possible Clues:

• Pep rally chant
• Famous South American monarch bringing happiness
• Does the Church, in short, even get such applause?
• Be a fan, in a way
• Bellyache erroneously being narrowed down to party refreshment?
• Joy
• Root for the team
• Supportive sound from the crowd
• Lift the mood of one in three, perhaps
• Applaud diva retaining energy