DaBaby's "Rockstar," featuring Roddy Ricch, continues atop Billboard's Songs of the Summer chart, logging a fifth week at No. 1 on the ranking (dated July 18).The 20-position Songs of the Summer running tally tracks the most popular titles based on cumulative performance on the weekly streaming-, airplay- and sales-based Billboard Hot 100 chart from Memorial Day through Labor Day (this year encompassing charts dated June 6 through Sept.