Related Clues:

•     Sung syllable
• La starter
• "___ la la..."
• Ditty syllable
• Chorus bit
• With 61-Down, refrain syllables
• "La la" lead-in
• __-la-la
• Syllable sung before "la la"
• La-la prelude
• La-la leader
• Syllable before "la la"
• Butterfly, once
• Partner of lah
• Repeated bit in a song