Beatles "It Won't Be Long" but every time they say "YEAH" you add a guy

There are 55 "yeahs" in this song, far more than any other Beatles song. What if every "yeah" added a new person? Then you'd have a 55-person choir and orchestra, including acoustic guitar, electric guitar, bass, Casiotone drum machine, 12-string, mandolin, ukulele, tambourine, and banjo. Let's make this delightful 2-minute pop song become progressively crazy.

Sorry we didn't sync up our dance moves, but do you know how hard it is to coordinate 55 people?