Mrs. Brown, You've Got a Lovely Daughter(1968)

You've got to sing... swing.. and do your own thing... And no one does it better in merry young London than Herman's Hermits

Herman inherits a greyhound and decides to make his fortune by dog racing. After traveling from Manchester to London in the hope of entering a national invitational, Herman and his friends find work in a pop group, and Herman falls in love.