The Butterfly Ball and the Grasshopper's Feast is a concept album and subsequent live rock opera written by Roger Glover.

The work was originally conceived as a solo vehicle for Jon Lord to be produced by Roger Glover who had recently left Deep Purple.

Using his connections, Glover recruited a large cast of noted rock musicians, with a different vocalist for each character, including David Coverdale and Glenn Hughes.

Les Binks, later of Judas Priest, and Michael Giles of King Crimson play drums on the album.

Again it had a star-studded cast of rock musicians, most notably Ian Gillan who was drafted in at the last minute and received a standing ovation on his entrance.