Thomas said his band used to cover Brown’s songs and that joining Brown was a smooth transition for them. He recorded on Brown’s releases during 1970s. The first album titled Hot Pants was in 1971. He also recorded on releases by The J.B.’s. Many of these recordings were later sampled in hip hop music, such as “Pass the Peas”, “Gimme Some More”, and “Escape-ism”.
Thomas performed with Brown for more than thirty years, longer than other bassists in that position. He recorded on several R&B number one hits such as “Hot Pants”, “Make It Funky”, and “Papa Don’t Take No Mess”. In a 2005 interview he expressed satisfaction with his work, stating: “I’ve been involved in one of the biggest, most legendary acts in the world. It’s gone on for a long time – 33 years, on and off – and I feel good about the musicians I’ve played with”.
After Brown’s death in 2006, Thomas transitioned back to fronting his own group and collaborating with various bands. His later recordings are with Naomi Shelton & the Gospel Queens in 2014 and The J.B.’s in 2018.
In early 2020 he became a Member of newly formed Rockinchair Productions 2020 and has been a collaborating member of The Soul De Lune Band.