Sean ORourke has performed with many artists over his career, including an extended stint with the Aquarium Rescue Unit. As a result it is not surprising that Oteil Burbridge and Jimmy Herring joined him on a track for his solo debut. Primal Colors also features a number of other musicians including Nick Longo (sax), Barry Thrasher (guitar), Henry Parrilla (keys) and Chuck Bithorn (percussion).