By the time that the album was produced, the members of Pentangle were already accomplished musicians, in their own fields, and had played together in various combinations. Jansch and Renbourn were recognised as solo artists and played together regularly, including their recording of the Bert And John album. McShee had sung folk and blues in pubs and clubs, and had recorded with Renbourn on Another Monday. Cox and Thompson were experienced session musicians and had played together in Alexis Korner's band.
Richie Unterberger said of the album "If it was more a folk-jazz-blues stew than it was folk-rock, it certainly rocked with a beat, and was executed with vocal harmonies, vocal and instrumental solo trade-offs, and a daring, irreverent spirit that immediately connected with rock-oriented listeners. And rock listeners, rather than folk ones, probably comprised the majority of the Pentangle's audience."
The Pentangle album was released in the UK as an LP as Transatlantic TRA162 on 17 May 1968. The U.S. version was also released in 1968 as Reprise RSLP63 15. A CD version was released as Transatlantic TACD 9.00549 O and a digitally remastered version as Castle CMRCD131, in 2001. The digitally remastered version includes some additional tracks: "Koan", "The Wheel", "Casbah" and four alternate takes of other album tracks.