Fourth is a 1971 studio album by the Canterbury band Soft Machine. The album is also titled Four or 4 in the USA; the numeral "4" is the title as shown on the cover in all countries, but a written-out title appears on the spine and label. This was the group's first all-instrumental album, although their previous album Third had almost completed the band's move in this direction toward instrumental jazz, and a complete abandonment of their original self-presentation as a psychedelic pop group, or progressive rock group,1."Teeth" (Mike Ratledge) – 9:152."Kings and Queens" (Hugh Hopper) – 5:023."Fletcher's Blemish" (Elton Dean) – 4:354."Virtually Part 1" (Hopper) – 5:165."Virtually Part 2" (Hopper) – 7:096."Virtually Part 3" (Hopper) – 4:337."Virtually Part 4" (Hopper) – 3:23