Jim’s first commercial release was “Drop the Funk” under the Primo moniker in early 2004 on the Soulfuric offshoot label deVice. Drop the Funk reached number 3 in the Hype chart, receiving support from the likes of Roger Sanchez, Miguel Migs and Copyright. On the back of this track, Primo was asked to remix Off the Cuff’s “Shake” on Soulfuric Trax by Head Honcho Brian Tappert. Following mentoring from Brian Tappert and Sam Holt (Copyright), Primo further developed his sound to create the horn-drenched "Cuban Blues” which made its first appearance on Defected in The House’s Wax Wars in 2005 before its official release on Soulfuric Deep in 2006.

It was during this time that Jim met co-producer, DJ and long-term friend Silky, forming Seminal Grooves. Thanks to Jim’s production skills and Silkys’ mentoring by close friend and House Music Legend Frankie Knuckles, Seminal Grooves enjoyed releases on labels such as Realbasic, Dae Deep, Soul Tonic, Reelgroove and Housepacific.