Block B's P.O releases his third single on Tuesday evening. Capture from Instagram @blockb_official_

Block B's P.O will release his third single, "Tony Lip," Tuesday evening. The title song is "Promise," which features MINO of boy band WINNER, his best friend.

The rhythmic hip-hop song carries a tropical ambience to chase away the heat of summer.

The two teaser images of the album show the playful friendship of the artists. Capture from Instagram @blockb_official_

The track is inspired by the movie "Green Book" and the theme is about friendship andpartnership. Likewise, the album teasers show playful images of the two artists.

P.O, 26, debuted in 2011 with seven-member boy band Block B's single "Do You Wanna B?" Aside from singing, he has been an actor since 2018. Currently, he plays the role of Ji Hyun-joong, a front desk worker, in tvN's drama "Hotel Del Luna."

By Lee Han-na