Future: Future review – too much filler, not enough killer

(A1/Freebandz/Epic)In an age of ADHD-level attention spans, prolific artists are a boon for diehard fans. Atlanta rapper Future used three mixtapes and one album in a 10-month span to reboot his career in brilliant fashion between 2014 and 2015, and hasn’t staunched the flow since. The hallmarks of his ice-cold persona are all over this surprise release: the thousand-yard-stare voice that ratchets up tension by forging relentlessly through dramatic beats, as on Poppin’ Tags and Rent