BTOB will be returning to KBS' 'Immortal Song 2' after three months!

SEE ALSO: [PHOTOS] BTOB express enthusiasm about finally meeting fans through 'Our Dream' fan concert tour

The boys last competed on the reality show in May for the 'Nation's Composer Son Suk Woo' special, and they recently filmed for the 'Saturday Night Fever' episode on August 28. Cube Entertainment�told allkpop�that BTOB will be going for a retro '80s theme with a modern flair for their upcoming performance.�

The BTOB members themselves thought up ideas for their 'Immortal Song 2' stage, putting together emotional vocals and sharp rap to pump up the audience.

In other news, BTOB are preparing for their comeback, but in the meantime, fans will be able to see them do individual promotions.�