I`M TELLING YOU NOW (Freddie and the Dreamers)

From Wikipedia:
Freddie and the Dreamers were an English band, who had a number of hit records between May 1963 and November 1965. Their stage act was based around the comic antics of the 5-foot-3-inch-tall (1.60m) Freddie Garrity, who was famous for bouncing around the stage with arms and legs flying. "I'm Telling You Now", which had been co-written by Garrity and Mitch Murray, reached Number 1 on the US Billboard Hot 100 in Spring 1965. They were the first of three consecutive groups from Manchester to have Number 1 hits that spring, the others being Wayne Fontana and the Mindbenders and Herman's Hermits. Their next biggest US hit was "Do the Freddie" at number 18, intended to inspire 'The Freddie' (sic) as a dance craze. The band's late 1965 album, Do the Freddie, included diagrams from dance instructor Arthur Murray on how to perform the routines.