The new additions include Vanilla Fudge; Strawbs; Chuck Negron (former lead singer of Three Dog Night); Mark Farner (formerlead singer of Grand Funk Railroad); and Brian Howe (former lead singer of Bad Company).

The previously announced roster joining The Moody Blues on the cruise includes The Zombies; The Orchestra; Ambrosia; Randy Hansen and Mellow Yellow. In addition to Christopher Cross; Renaissance; Rare Earth; John Waite; The Ides of March; Randy Hansen with the Music of Jimi Hendrix; plus Matthew and Gunnar Nelson performing "Ricky Nelson Remembered," a special tribute to their legendary father.