(LEAD) BTS earns 7th No. 1 song on the Billboard singles chart with 'Swim' | Collector

Yonhap News Agency

(LEAD) BTS earns 7th No. 1 song on the Billboard singles chart with 'Swim'

SEOUL, March 31 (Yonhap) -- K-pop supergroup BTS has secured its seventh No. 1 h...