The album has pan-African influences in its instrumentation and approach as well as a conventional rhythm section. We get South African vocal stylings, a funk ambiance, contemporary elements like reggae and the melodic, playful flute solos of Kellerman.
He is perhaps no Eric Dolphy (actually he owes more to a Roland Kirk soulfulness) but he has a beautiful tone and plays nicely in a folk-jazz sort of way. It's the sound of the album as a musical offering, a modernized Afro-funk that gives you an impactful experience, rather than a flute-plus-rhythm "pure jazz" effort. But that is cool once you listen a few times and adjust expectations.
It's a beautiful listen.