Broadway Production/Score

When CATS opened on Broadway in 1982, the score was significantly altered from the original, mainly centred around cut verses to some longer songs, and two new pieces of music. Many of the revised Broadway numbers have since superseded their original London counterparts as the "definitive" versions that are used all around the world.

Notable features of the score include:
 * Lyric changes in the final chorus of "Jellicle Songs for Jellicle Cats"
 * Mistoffelees sang the first chorus of "Invitation". The ensemble chorus of the song was retained.
 * The original beginning of the "Gumbie" tap is retained, although the tap-off was cut.
 * A large chunk of the song was cut; this shortened version has since supplanted the original London one as the "definitive" version
 * Munkustrap, Mistoffelees and Alonzo all sang the "terrible bore" line in "Tugger".
 * The "Bustopher" solo is shortened.
 * There originally was no Macavity scare after Bustopher, instead Tugger announced Mistoffelees, who proceeded to sing "Mungojerrie and Rumpleteazer" himself, conjuring puppets of them, with the scare occuring after this song was over. This was soon reverted to the original staging from London, but retaining the new melody, resembling the Vienna version.
 * In "Old Deuteronomy", the chorus is sung "No, yes...".
 * A verse was cut from the song while the ensemble repeated the chorus three times; this has since become the "definitive" version of the song
 * The Jellicle Ball had no music cuts.
 * Jellylorum and Sillabub's lines in the Grizabella reprise are retained.
 * This was the introduction of the Aria to Growltiger, instead of the Ballad. The full sword fight music is retained.
 * The longer beginning of the Macavity fight is retained.
 * Mistoffelees sang the second verse of his song himself, keeping the dance break after the second verse, rather than between. His singing in this song was later removed, but the dance break remained after the second verse.
 * A verse and chorus about dogs was cut from "Ad-Dressing of Cats" and this has since become the "definitive" version of the song