Related Clues:

• Light source
• 'I don't know the words' chunk
• Scale part
• Song refrain
• Fifth of eight
• 'I forget the words' bit
• Refrain syllables
• Refrain bit
• Scale tone
• Peruvian currency unit
• Peruvian money
• Peruvian spendable
• ___ land
• ("I can't remember the words...")
• Helios's Roman counterpart