Refrain in 51-Across that accompanies the sounds at 24-, 37- and 47-Across 5 letters

Crossword clues for Refrain in 51-Across that accompanies the sounds at 24-, 37- and 47-Across 5 letters:

EIEIO: Refrain in 51-Across that accompanies the sounds at 24-, 37- and 47-Across