Beautiful, intense, spiritual jazz from the master! This is a landmark album for John Coltrane, recorded in his 'classic period' just after his masterpiece 'A Love Supreme', but marking a decisive turning point in his stellar tragectory towards a more 'out there' and experimental approach to improvisation! This recording features the classic quartet augmented by both Rashied Ali and Pharoah Sanders! Ferociously deep, entrancing. uplifting music of the highest order! Highly recommended!