"Birmingham-based saxophonist and MC continues to impress ... Kinch's latest opus sees him unleashing a 17-track concept album inspired by arcane mathematical principles. But while on paper, Nonagram might seem more than a tad esoteric (...), in actuality, the music, despite the abstruse concepts that underpin it, is easier to assmilate. In fact, you don't have to know the theory behind Nonagram to appreciate its varied sonic landscapes. There's plenty of virtuosic saxophone-led improv and also some tremendous hip-hop-infused jazz, best exemplified by "Four Caste", which offers a trenchant commentary on a racially-polarised world. Scintillating stuff".