The Cocoa Song is from the cult British Film Institute-funded multicultural musical Moon Over The Alley, directed by Joseph Despins and William Dumaresq.
Released in 1976 with a score by Galt McDermot, a fellow Canadian who is probably best known for his compositions for Hair, Moon Over The Alley is largely set around London W10; this scene was shot at the top end of Portobello Road market.