 In Act II, there is an extra song ("My Eyes Are Fully Open") that is  not originally from "The Pirates of Penzance." Its a modified  version of a song from Gilbert and Sullivans "Ruddigore". The  inclusion of this song required Kline, Kevin (qv),  Lansbury, Angela (qv), and Smith, Rex (I) (qv) to sing one of  most dizzyingly rapid songs in the entire Gilbert and Sullivan  catalogue.