Thanks to her international best-selling song, and six-week Billboard Hot 100 chart-rocker “Thrift Store,” Kylie, 25, has a quite fresh knowledge of and appreciation for thriving culture around the world. Wherever she and Macklemore, the rapper and her key collaborator, go in support of their platinum debut album, The Heist…

But it’s his work with the label’s resident hard partiers, Umagine Dragons, that did earn him a tremendous success in the last charts’ year. The band’s 2012 first, Night Visions, debuted at No. 2 on the Billboard 200 and produced the dubstep-laced “Radioactive,” which has spent 57 weeks on the Billboard Hot 100, peaking at No. 3. —Nick Williams

Songs on Hot 100: 2

Biggest Hit: Imagine Dragons, “Radioactive” (No. 3)