The year of the low-key rap hit is upon us. Of course there are still the Pitbulls and Flo Ridas of the world, but more and more, it’s the nonchalant, not-even-trying rap songs that are becoming the most catchy. Instead of overproduced turn-up anthems, we’re getting more raw hits with casual deliveries and choruses so simple that you’ll be singing along word for word after one listen. Boston’s Cousin Stizz already had one of these hits with “Shoutout,”¬†and now he’s got another on his hands with “No Bells.”