Complex sentence: Wally Stott was originally a composer of light music, best known for pieces such as the jaunty "Rotten Row" and "A Canadian in Mayfair", a homage to Robert Farnon's "Portrait of a Flirt".
Split into simpler sentences: Wally Stott was originally a composer of light music, best known for the jaunty piece "Rotten Row". Also notable is "A Canadian in Mayfair", a homage to Robert Farnon's "Portrait of a Flirt".