Pop stars ruled iHeartRadio's charts this year, but Post Malone was the top artist of 2019

5:45am PST - December 17th, 2019    camila cabello - Business Insider

2019 was a year of both comebacks and meteoric rises in music, and new artists as well as old favorites showed up in iHeartRadio's year-end review. Post Malone took the top place for artists in 2019, according to iHeartRadio data shared with Business Insider,…