BTOB's Hyunsik will be making his first guest appearance with his father on KBS2's 'Yoo Hee Yeol's Sketchbook'. 

According to media reports on April 25th, the father and son singers will be appearing on 'Sketchbook' as part of celebrating May as the month of family. Hyunsik's father Lim Ji Hoon is a folk music singer who debuted back in 1984. 

Hyunsik and his father will film their episode on May 3rd, however, their episode broadcast is yet to be announced. 

'Yoo Hee Yeol's Sketchbook' airs every Friday at 11:25 PM KST.