In 1968, Dorset formed the group Good Earth, which included Colin Earl on keyboards, Dave Hutchins on bass, and Ray Bowerman on drums. They recorded the album ''It's Hard Rock And All That'' on the Saga
record label, before Hutchins and Bowerman left. Joe Rush joined on
washboard and the group adopted a more
acoustic-based
skiffle style. In 1970, with further line-up changes, the group became
Mungo Jerry with hits to follow such as "
In the Summertime". The song took Dorset only ten minutes to compose on a second-hand
Fender Stratocaster while he was taking time off work from his regular job, working in a laboratory for
Timex. Dorset has also maintained a solo career parallel to his
leadership of Mungo Jerry. In 1972, he released the album
Cold Blue Excursion, made up entirely of self-penned songs, many featuring
strings and
brass accompaniment. In 1983, he was part of one-off
blues outfit
Katmandu with
Peter Green and
Vincent Crane, who recorded an album
A Case for the Blues. In 1986, billed as 'Made in England', he
recorded and released the
theme tune for the
TV drama series
Prospects, which was also released as a single. One song recorded by Mungo Jerry, "
Feels Like I'm in Love", was originally written by Dorset for
Elvis Presley, who died before the song could be recorded. Nevertheless, in 1979 it was recorded by the
Scottish disco singer
Kelly Marie, and became a UK
number one in September 1980. This made Dorset one of the first songwriters to top the
UK Singles Chart with singles performed by himself, and by another musician.{{cite book ==Later disputes==