2.3K views · 94 reactions | So BTS has this tradition of doing switch-up for fun, in which the Rap Line (SUGA, J-Hope, and RM) and the Vocal Line (Jin, Jimin, V, and Jungkook) would switch roles in singing some songs. In this clip, RM was tasked to belt the Vocal Line part of "Butterfly" which is obviously funny because he's a rapper. But I loved the part when his fellow Rap Line members SUGA and J-Hope hyped him during the chorus #BTS #RM #namjoon | Christine Genevieve Musa | Facebook