Dylan Mullen (born February 10, 1994), known professionally as Smokeasac, is an American record producer and songwriter based in Hollywood, Los Angeles. He is best known for frequently collaborating with the late Emo rapper Lil Peep, produced "Benz Truck", Peep's albumsCome Over When You're Soberpart 1 and 2.  
Mullen's first began producing music in Boston while in college studying audio engineering and production at a local college. 
Mullen and Lil Peep would later sign to First Access Entertainment in early 2017. During this time, both musicians wrote and recorded Peep’s first collaborative effort for major release. Six months were spent in studios in Los Angeles and London. 
The first tracks from those recordings were released in August of 2017 as a 7 song EP -Come Over When Your Sober pt 1.