Def Jam starts the year with a bang, as Justin Bieber’s “Yummy” gets an impressive 58 adds on impact. Columbia sees 24 stations come in this week on Tyga’s “Ayy Macarena,” while Epic gets 19 commitments with Flipp Dinero f/Lil Baby’s “How I Move.” Label mate Camila Cabello f/DaBaby’s “My Oh My” is right behind with 18 adds. Russ & Bia’s “Best On Earth” (Russ My Way/Columbia) closes out another 11 stations.