Post Malone’s “Rockstar,” featuring 21 Savage, notches a fourth week at No. 1 on the Billboard Hot 100 chart (dated Nov. 18), the longest stay atop the chart for a rap song this year. Plus, Camila Cabello’s “Havana,” featuring Young Thug, soars from No. 7 to No. 2 on the Hot 100, marking a new career best (counting … Continue reading Post Malone & 21 Savage No. 1 on Billboard Hot 100 for Fourth Week, Camila Cabello’s ‘Havana’ Surges to No. 2