For his London acts, Leno purchased songs from the foremost music hall writers and composers. One such composer was Harry King, who wrote many of Leno's early successes. Other well-known composers of the day who supplied Leno with numbers included Harry Dacre and Joseph Tabrar. From 1890, Leno commissioned George Le Brunn to compose the incidental music to many of his songs, including "The Detective", "My Old Man", "Chimney on Fire", "The Fasting Man", "The Jap", "All Through A Little Piece of Bacon" and "The Detective Camera". Le Brunn also provided the incidental music for three of Leno's best-known songs that depicted life in everyday occupations: "The Railway Guard" (1890), "The Shopwalker" and "The Waiter" (both from 1891). The songs in each piece became instantly distinctive and familiar to Leno's audiences, but his occasional changes to the characterisations kept the sketches fresh and topical.