Without a doubt Yung Lean delivered with Unknown Memory. This isn't the same kid who mumbled his way through "OreoMilkShake" and rapped about looking up girls skirts and sticking his d*ck in a glory hole. This is a new Lean. A more matured Lean. An objectively better Lean - less focused on the rapping this time around (he still raps but it's not as in the forefront as on Unknown Death 2002) by using autotune and vocal modulation to cater the trippy production perfectly. This is the future of hip hop, a sadder future.