The clue for solving the puzzle begins at 6:17 in the video.
The following sequence is displayed in the fireworks:
Each shape has a musical note in the puzzle
cube, planet, butterfly - E
circle, smiley - D
star - C
heart - G
bug - F
Using the pattern from the fireworks to play the notes from the puzzle gives the song Begin the Beguine.
Answer is begin the beguine
(Note: There are differences of opinion on the shapes displayed; namely this solution doesn't mention the bug shape at all)
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