Conversation so far:
What is Radio Gnome Invisible trilogy by Gong?
The band, Gong's Radio Gnome Invisible trilogy, describes the adventures of Zero the Hero, the Good Witch Yoni and the Pot Head Pixies from the Planet Gong.
What was Tubular Bells in relation to Radio Gnome Invisible trilogy by Gong?
Tubular Bells is the debut studio album by English multi-instrumentalist, composer and songwriter Mike Oldfield.
Was Mike Oldfield part of Gong?
Mike Oldfield was not part of the band, Gong.
How did Flying Teapot by the band, Gong do?
What was the Gong mythology?
The Gong mythology is a humorous collection of recurring characters and allegorical themes which permeate the albums of Gong and Daevid Allen

Question: What was the second part of the trilogy?
Self-contained rewrite: What was the second part of the Gong Radio Gnome Invisible trilogy?