The softness of Avelino’s voice disguises his steely ambition and sharp lyrical barbs. The North London MC broke through during the mid-’10s grime explosion with a run of ominous collaborations (including “Hulk Hogan,” with Wretch 32). As highly regarded for his thoughtful poetic flow as for the unhurried authority of his voice, Avelino’s influence helped alter the direction of British hip-hop: His crucial collaborations with guiding lights Stormzy and Skepta (“Energy”) provided a glowering counterpoint to the grime scene’s barked aggression.