When rapper and multi-instrumentalist Mac Miller died of an accidental overdose in 2018, he left behind an unfinished two-part album project. The first of the two sets, "Swimming", was released last year; now its bittersweet companion, "Circles", has arrived to complete Miller's discography. It's a musically diverse and mostly introspective affair, with Miller shuffling between styles wearily and switching roles (singer-songwriter, rapper, multi-instrumentalist, beat-maker) seemingly at will. While such role hopping could have resulted in a sonic mess, the set sounds surprisingly coherent, not least because the thread running through it all is Miller's painful soulsearching and well documented mental health issues. As a posthumous full stop to a life ended all too soon, "Circles" certainly hits home hard.