Since 2009, the rapper Earl Sweatshirt, now 19, has been part of the Odd Future crew from Los Angeles far less loud and forthright than the group’s point. This week: two hip-hop lieutenants make a move. Left, Earl Sweatshirt in May, performing at the Sasquatch Music Festival. You may have to select a menu option or click a button. Popcast: Earl Sweatshirt and ASAP Ferg Step Up.