The patter song is characterised by a moderately fast to very fast tempo with a rapid succession of rhythmic patterns in which each syllable of text corresponds to one note. It is a staple of comic opera, especially Gilbert and Sullivan, but it has also been used in musical theatre and elsewhere.
Patter section of Rossini's "Largo al factotum"
Gilbert and Sullivan refers to the Victorian-era theatrical partnership of the dramatist W. S. Gilbert (1836–1911) and the composer Arthur Sullivan (1842–1900) and to the works they jointly created. The two men collaborated on fourteen comic operas between 1871 and 1896, of which H.M.S. Pinafore, The Pirates of Penzance and The Mikado are among the best known.
W. S. Gilbert
Arthur Sullivan
One of Gilbert's illustrations for his Bab Ballad "Gentle Alice Brown"
Poster for Ages Ago, during a rehearsal for which Frederic Clay introduced Gilbert to Sullivan