There’s a distant rumble of traffic, a reminder that much of the album was recorded on the roof of Ballaké Sissoko’s home in Bamako, Mali. The celebrated kora player leads off with a tranquil, gently rippling solo, but then a cello eases in, effortlessly taking the lead before letting the kora dominate again as the improvisation speeds up. Five years on from their debut set, Chamber Music, Sissoko and Vincent Segal have teamed up again, the latter an adventurous classically trained French cellist who also works with trip-hop exponents Bumcello. This time the set consists almost entirely of duets – the singer Babani Kone sometimes makes an appearance – but no other musicians are needed. There are late-night reflective pieces here, along with upbeat and intricate passages where cello and kora switch between providing rhythm and melody, with the duo showing an uncanny skill in knowing when to swap roles.