On September 27th, Brian Joo uploaded backstage pictures from his musical "Rent". He tweeted "My lil'sisters, Amber 'f(x)' & @missA_min~ Thanx guys for coming to see RENT & always being supportive^^ Luv y'all". miss A's Min also tweeted, "I went to see the musical RENT. I believed in the rainbow and was moved. Everyone hurry up and go see it!"

Along with f(x)'s Amber and miss A's Min, actress Yun Jin Kim also came out to support Brian.

"Backstage before our show, Yun Jin Kim (from LOST) came to say goodluck. Nervous that she's watching tonight^^" "RENT" is playing in�Chungmu Art Hall Grand�Theater�from August 28th - October 9th, so if you're in the area be sure to catch Brian as 'Mark Cohen'! You can buy tickets at Ticket Interpark Source + Image: Twitter and RENT