Captain Hastings on Jazzy Flute

Hugh Fraser, the actor who so definitively portrays Captain Hastings in David Suchet's ITV Poirot, and is a superb narrator for many Agatha Christie audiobooks; was a musician in younger days, and played jazzy flute - and guitar (below) - on the theme tune of TV's Rainbow programme, for pre-school kids in the 1970s. 

Rainbow is probably most remembered for the legendary, "naughty" and boastful, character of Zippy. 

(Note: Zippy is the one above, with the orange head... and zippable mouth. 

Zippy was the instigator of most of the trouble that led to the plotlines (his abrasive character being refreshing and necessary, given how soppy and insipid were his co-stars); and he had an distinctive throaty and whining voice - somewhat like a deeper-toned, and English, version of Kermit.