Like the other Pierre Moerlen's Gong albums, this is predominantly jazz-fusion and has little to do with the psychedelic space rock of Daevid Allen's Gong, even though the bands share a common history.
Expresso II is an appropriate title considering it is very much a companion piece to the band's previous release, Gazeuse! (called Expresso in North America). It is an extension of the melodic mallet percussion infused progressive jazz/rock that very much dominated this incarnation of Gong, and would be the last album released on the band's Virgin contract before Pierre Moerlen changed the name to Pierre Moerlen's Gong to distinguish this (very different) incarnation from that of the Daevid Allen-led chapter.
Pierre Moerlen: drums, glockenspiel, xylophone, tubular bells, tympani, vibraphone