MAY 7 (Reuters) — Popular South Korean boy band Big Bang returns to the music scene after a three-year hiatus with a new single called “Loser”, which explores the stresses of daily life. The track has dominated South Korea’s online music charts since its release on May 1 and has also ranked top on the iTunes Single Charts of Hong Kong, Macau, Singapore and Taiwan – markets where the band has many fans. The quintet […]