HomeMusic BTS 2021 Muster Sowoozoo 6/13/2021 👉WATCH THE FULL VIDEO HERE BTS 2021 Muster Sowoozoo poster BTS 2021 Muster Sowoozoo is a two-day online live-streaming event hosted by phenomenal K-pop group BTS.It will take place on June 13 and 14, 2021.Read also: Did BTS Sing “Life Goes On” On Their Instagram Live? Tags: Music Facebook Twitter