Recorded live at the Norwegian Kongsberg Jazzfestival, this session captures the 68-year old Parker and 73-year old McPhee displaying all the grace, skill and wit they've accrued in a combined century-or-so of adventures in improvisation. It's only the second time they've ever recorded as a duo, but the dialogue of ideas flows like two long-time associates engaged in easy but stimulating conversation. On pocket trumpet, McPhee swerves from clipped phrases to blustery shushing to vibrating drone raspberries, eliciting rattling, braying cascades of circular breathing from Parker's tenor. Switching to soprano sax, McPhee's sinuous lines draw a more slippery, tentative approach from Parker, with the two horns intertwining like sleepily charmed snakes. What really takes it to the next level is the seamless incorporation of two distinct creative urges that seem to spring from different hemispheres of the brain: on the one hand, McPhee and Parker dwell entirely in the moment, acting and reacting to every split-second development, while, on the other, applying an adroit, overarching logic that seems to guide the music into perfectly sculpted destinations. It's a masterclass, for sure.