2 Years On is the Bee Gees' eighth album (the group's sixth international release), and was released in December 1970. The album reached No. 32 on the US charts, and sold 375,000 copies worldwide (see 1970 in music). The album saw the return of Robin Gibb to the group after the earlier disagreement and subsequent split following Odessa; 2 Years On was also the first album to feature drummer Geoff Bridgford, who remained a full-time member of the group until 1972. The best-known track is "Lonely Days". Released as the first single by the reunited brothers, it charted high in the US (#3 in Billboard, No. 1 in rival chart Cashbox), but peaked at No. 33 in the UK.
During the temporary break-up of the group, Maurice appeared in London musical theatre Sing a Rude Song. Maurice recalls: "We got fed up with all the lawyers fighting over our assets, so we walked out of this big summit meeting and started the group again".
Robin and Maurice reunited in June 1970 with new drummer Geoff Bridgford, who was drummer of the Bee Gees until 1972. They recorded four songs, including "Sincere Relation" and "Lay It on Me". "We Can Lift a Mountain" was also re-recorded, a song from 1968. After that, Maurice joins the supergroup The Bloomfields with Billy Lawrie, and worked with Tin Tin. In August, Maurice and Robin announced that the Bee Gees were back, with or without Barry's participation and fourteen songs was recorded including "Back Home" and "I'm Weeping". Then on 21 August, the three Bee Gees came together to continue recording. Despite the album marking the musical reunion of the Bee Gees, only three songs credited all three Gibb brothers as composers; the single "Lonely Days" and its flip side '"Man For All Seasons" and "Back Home". Maurice is on all songs, but Barry and Robin are only on the ones they wrote or co-wrote. On the August sessions, they also recorded: