Puzzle 18 (APP5) Solution

The solution to Puzzle 18 (APP5)

How to Solve
Within the video there are 14 scenes of "Henchmen" dancing to the song with a Roman numeral. By counting the number of henchmen and applying an appropriate modifier from the lyrics (ex: "Step up fast / and be the first team to solve this puzzle rap / To get them points do what I said and stop / Add six for red") a sequence of numbers is revealed, resulting in a message when the simple cypher A=1, B=2, etc. is applied.

Solution
AUMCPLAYGROUND