U-Know Yunho of TVXQ is set to deliver powerful vocal chemistry with some of K-pop's brightest stars.

SM Entertainment announced on October 29 that EXO's Kai and i-dle's Minnie participated in Yunho's upcoming full-length album I KNOW, joining him for special collaborations that showcase their unique synergy.

Kai features on the track Waterfalls, an R&B-pop song inspired by the sentimental mood of the early 2000s. The lyrics depict lingering affection and the quiet patience of waiting for a loved one to return, without resentment toward the breakup. Kai's deep emotional delivery enhances the song's melancholic atmosphere.

Minnie lends her voice to Premium, a pop track layered with retro-style synthesizers and funky bass rhythms. The lyrics express excitement and sweetness in the perfect timing of love. According to the label, "Minnie's feature adds a charming and romantic tone that completes the song beautifully."

The album I KNOW includes ten tracks in total, featuring dual title songs Stretch and Body Language. The record embraces a variety of genres under the theme "Fake & Documentary," pairing songs that reflect two different perspectives on the same story.

U-Know Yunho's new album I KNOW will be released on November 5 at 6 PM KST across major streaming platforms.