On July 23, KEY and Lee Changsub participated in one military event as the members of the military band.

The video showed KEY and Lee Changsub in a red military band uniform playing a song at the rear of the stage.
The two stars are both passionately moving their body to the music while swinging their drum sticks about in the air.

The other members clearly did not look as excited as the two though.
Along with this video, the fan wrote, "Haha this is hilarious! It seemed KEY and Lee Changsub were overly excited."
It was explained that their performance was supposed to be a fun one, so KEY and Lee Changsub were just doing what they were meant to do.
It is assumed that they got a little hyper while doing their job that they unintentionally made the audience and fans laugh.
190723#비투비 #이창섭 #창섭 #BTOB #LEECHANGSUB #CHANGSUB pic.twitter.com/eOxegWpv8g
— Falling섭 (@fallingsub) July 23, 2019
Meanwhile, Lee Changsub is expected to complete his military service in August 2020, and KEY about two months after him in October the same year.
(Lee Narin, Credit= 'BTOBofficial' 'shinee' Facebook, Online Community)
(SBS Star)