James Stuart was a specialist in the roles of what type of moderate-to-very-fast music typically used in comic opera?
James Stuart (opera director):  He became a specialist in the patter roles of Gilbert and Sullivan, including Sir Joseph Porter, K.C.B. in "H.M.S. Pinafore", Ko-Ko in "The Mikado", and Reginald Bunthorne in "Patience" among others. Patter song: 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. Patter song:  It is a staple of comic opera, especially Gilbert and Sullivan, but it has also been used in musicals and elsewhere.
patter song