Holy mamma mia! Pizza Roma in Somerville is the real deal, folks – a colorful little spot painted in the Italian flag colors that practically screams “authentic” before you even walk through the door.

In these 100 songs, you’ll hear lusty dubstep, quietly subversive electronic pop, regional rap bangers, alt-country odysseys, ubiquitous chart-toppers, and much more. We were drawn to songs this year ...