As the 4th member up for BTOB's ongoing 'Piece of BTOB' series, Hyunsik will be releasing his self-composed track "Swimming", which he performed this past January at BTOB's 3rd solo concert 'BTOB Time' for domestic fans. 

Whether you're already familiar with Hyunsik's solo song "Swimming", or will be hearing it for the first time through its official release, admire a preview of the idol's vocals below while you wait for the full release on July 24 at 6PM KST.

SEE ALSO: BTOB shares official comeback schedule for 2nd album 'Brother Act'