Jack Harlow - That's What They All Say - Jack Harlow - That's What They All Say is the debut studio album by American rapper Jack Harlow. The album features guest appearances from Lil Baby, Big Sean, Chris Brown, Adam Levine, EST Gee, Bryson Tiller, DaBaby, Tory Lanez and Lil Wayne, the latter three who appear on the remix of Harlow's breakout single, "What's Poppin". TITLE: That's What They All Say