Jackie Jackson didn't front anything. He was the reason everything else stood up. Born Clifton Jackson in Kingston in 1947, he came to the bass sideways — piano first, then upright, after watching Lloyd Brevett anchor the Skatalites at the Bournemouth Club around 1962. That single formative encounter set the template: Jackson would spend the next six decades doing for reggae what Brevett did for ska, which is to say he made the beat feel inevitable. By 1966 he was at Duke Reid's Treasure Isle studio, playing in the Supersonics house band and cutting Alton Ellis's I Have Got a Date — one of the definitional rock steady recordings, and one where Jackson's buoyant, propulsive bass line is the structural argument the song makes. He was earning five shillings a song. The math was not in his favour, but the recordings were. Then came 1968 and the pivot to reggae, which Jackson helped engineer as part of the floating session band that worked under whichever name the current producer preferred — All Stars, Upsetters, Dynamites, Crystalites. The cast included Paul Douglas on drums, Hux Brown and Dougie Bryan on guitar, Winston Wright on organ and Gladdy Anderson on piano. Together they appeared on the Wailers' Small Axe, Bob and Marcia's Young Gifted and Black, King Stitt's Fire Corner, Keith and Tex's Stop That Train, and a cluster of Leslie Kong productions including Jimmy Cliff's Vietnam — the track that convinced Paul Simon to travel to Jamaica and record Mother and Child Reunion in 1971 with these same players. Jackson's Motown education showed most clearly on the Wailers sessions. He had absorbed James Jamerson's approach — the melodic counterpoint, the refusal to simply mark time — and applied it to a music that moved at a different pace and with different spiritual weight. The result was bass playing that felt soulful inside reggae's specific gravity. Aston Barrett, who would define the Wailers' sound for their most famous decade, named Jackson as a direct influence. So did Robbie Shakespeare. If you want to understand where the bottom end of roots reggae came from, Jackson is part of the direct lineage. His appearance in Perry Henzell's The Harder They Come (1972) is easy to miss if you're watching the film, but harder to miss if you're listening to it. Jackson is on the title track with Jimmy Cliff and on Sweet and Dandy with Toots and the Maytals, as well as on Pressure Drop — one of the great bass-forward recordings in any genre. By 1973 he had reduced his session work to concentrate on the Maytals full-time, a relationship that lasted, with one long hiatus between 1982 and 1995, until the pandemic shut live music down entirely. The hiatus itself is worth noting. Jackson walked away from touring and the unreliability of session work in late 1982 and spent thirteen years running an entertainment consultancy in Montego Bay. He rejoined the Maytals in 1995 and stayed until Covid intervened. The Order of Distinction (Commander class) followed in 2012. His wife Karen Smith, a cabaret singer he married in 1989, died in 2021. He is survived by four daughters. What Jackson did was not flashy and was never meant to be. He played in service of the song, which is the hardest discipline in bass playing, and he did it on recordings that have not stopped mattering in sixty years. The Israelites, The Liquidator, Return of Django, Pressure Drop, Small Axe — these are not oldies-circuit nostalgic fare. They are part of the working vocabulary of popular music. Jackson held the bottom end of all of them. That is a career.