The second posthumous Michael Jackson collection, following 2010's disastrous Michael, Xscape – curated by Epic CEO LA Reid – features eight unfinished demos "contemporised" by lead producer Timbaland, plus Rihanna favourites Stargate and previous Jackson collaborator Rodney Jerkins. Veering between a polished take on Off the Wall-era disco (elegant single Love Never Felt So Good, first recorded in 1983), intricate electro-pop (the unfortunately titled Do You Know Where Your Children Are) and Timbaland's default industrial-sounding R&B (Blue Gangsta, Slave to the Rhythm), it's an understandably ad hoc collection that conjures up snatches of wonder from scraps of genius.