Doyle's musical career began at the age of 15, spanned 45 years, and covered a wide range of music from blues to pop rock to jazz.
He was musical director and guitarist for Winifred Atwell, for two years, and a member of the backing bands for the Delltones, and Dig Richards.
Doyle was a member of the Soulmates (1967), Col Nolan and the Soul Syndicate, Aesop's Fables (1968–69), and Moonstone (1970).
Aesop's Fables had formed in 1968 in Sydney as a pop vocal group with Doyle on guitar (ex-Telstars), Sheryl Blake on lead vocals, Russell Dunlop on drums, Michael Lawler on bass guitar and Gary Moberly on organ (ex-Ramrods, later worked with Bee Gees).

In September 1970 King Harvest were formed as a progressive rock group with Doyle on guitar, Leo de Castro, on vocals and guitar, Mark Kennedy on drums (ex-Spectrum), Duncan McGuire on bass guitar (ex-Phantoms, Epics, Questions, Doug Parkinson in Focus, Rush) and Steve Yates on keyboards (Rush, Expression).
Doyle was soon replaced by Billy Green (ex-Doug Parkinson in Focus).

Doyle was the founding mainstay guitarist of Ayers Rock, a jazz fusion, progressive rock band, which formed in August 1973 in Melbourne.
Over the following years other members included Burton, Kennedy, McGuire, Col Loughnan (on trumpet) and Dunlop.
The group released three studio albums, Big Red Rock (November 1974), Beyond (February 1975) and Hotspell (May 1980) before disbanding in 1981.
For the group's final album Doyle wrote or co-wrote four tracks.

Leon Isackson, in his book Behind the Rock and Beyond (2010), recalled that "Jim was a young 'Humphrey Bogart look-alike' with an excellent style on Gibson guitar.
His suave appearance ... earned him the salubrious nickname of 'Diamond Jim'".
Elvin Bishop, a United States blues musician, was backed by Doyle during Bishop's first tour of Australia in 1986, "Jimmy Doyle is a hell of a guitar player — I love him".
Later in that decade, touring English jazz singer and keyboardist, Georgie Fame, invited Doyle to join the Aussie Blue Flames, which were Fame's backing band on his Australian tours.
Doyle later presented a regular radio program, In the Deep with Jim, on North Shore's FM99.3 (2NSB), a community radio station in Sydney.
Doyle's musical career began at the age of 15, spanned 45 years, and covered a wide range of music from blues to pop rock to jazz. He was musical director and guitarist for Winifred Atwell, for two years, and a member of the backing bands for the Delltones, and Dig Richards. Doyle was a member of the Soulmates (1967), Col Nolan and the Soul Syndicate, Aesop's Fables (1968–69), and Moonstone (1970). Aesop's Fables had formed in 1968 in Sydney as a pop vocal group with Doyle on guitar (ex-Telstars), Sheryl Blake on lead vocals, Russell Dunlop on drums, Michael Lawler on bass guitar and Gary Moberly on organ (ex-Ramrods, later worked with Bee Gees).
In September 1970 King Harvest were formed as a progressive rock group with Doyle on guitar, Leo de Castro, on vocals and guitar, Mark Kennedy on drums (ex-Spectrum), Duncan McGuire on bass guitar (ex-Phantoms, Epics, Questions, Doug Parkinson in Focus, Rush) and Steve Yates on keyboards (Rush, Expression). Doyle was soon replaced by Billy Green (ex-Doug Parkinson in Focus).
Doyle was the founding mainstay guitarist of Ayers Rock, a jazz fusion, progressive rock band, which formed in August 1973 in Melbourne. Over the following years other members included Burton, Kennedy, McGuire, Col Loughnan (on trumpet) and Dunlop. The group released three studio albums, Big Red Rock (November 1974), Beyond (February 1975) and Hotspell (May 1980) before disbanding in 1981. For the group's final album Doyle wrote or co-wrote four tracks.
Leon Isackson, in his book Behind the Rock and Beyond (2010), recalled that "Jim was a young 'Humphrey Bogart look-alike' with an excellent style on Gibson guitar. His suave appearance ... earned him the salubrious nickname of 'Diamond Jim'". Elvin Bishop, a United States blues musician, was backed by Doyle during Bishop's first tour of Australia in 1986, "Jimmy Doyle is a hell of a guitar player — I love him". Later in that decade, touring English jazz singer and keyboardist, Georgie Fame, invited Doyle to join the Aussie Blue Flames, which were Fame's backing band on his Australian tours. Doyle later presented a regular radio program, In the Deep with Jim, on North Shore's FM99.3 (2NSB), a community radio station in Sydney.
Jimmy Doyle (musician)