[2][3][4] Eccles had a Jamaican hit in 1961 with the early ska song "Freedom", which was recorded in 1959, and was featured on Dodd's sound system for two years before it was released.
During this period, he made stage outfits for musicians such as Kes Chin, The Mighty Vikings, Byron Lee and the Dragonaires, Carlos Malcolm and The Blues Busters.
Eccles recorded many organ-led instrumentals with his session band The Dynamites (same band has Derrick Harriott's Crystalites), featuring Jackie Jackson, Hux Brown, Paul Douglas, Winston Wright, Gladstone Anderson, Winston Grennan, Joe Isaacs, and Hugh Malcolm, with Johnny Moore and Bobby Ellis both contributing trumpet in different sessions.
[8][10] In 1970, Eccles helped pave the way to the dub music genre by releasing an instrumental version of "Herbman Shuffle" called "Phantom", with a mix focusing on the bass line.
[11] He recorded artists such as Alton Ellis, Joe Higgs, the Trinidian Lord Creator ("Kingston Town"), Larry Marshall, Hemsley Morris, Earl Lawrence, The Beltones, Glen Ricks, Cynthia Richards, Buster Brown and Beres Hammond.
[7][12] A socialist militant,[13] Eccles was appointed as an adviser on the music industry to Michael Manley's People's National Party (PNP) and took part in Jamaica's 1972 prime ministerial elections by organising a "Bandwagon" featuring musicians such as Bob Marley & the Wailers, Dennis Brown, Max Romeo, Delroy Wilson and Inner Circle, performing around the island in support of Manley's campaign.
[6] Throughout the 1970s, he remained close to Manley and wrote several songs in praise of the PNP program, including his hits "Power for the People", "Rod of Correction" or "Generation Belly".