Recently, Music K Entertainment announced IZ's first ever collaboration is happening soon with Yuju and Jihoo. Following the news on October 19, IZ shared a teaser image for "Heart Signal" with the words, "I want the two of us to meet. You and I."
"Heart Signal" is described as a rhythmical R&B with a jazzy shuffle and swing sound. The full release is set for October 27. Watch out for Yuju x Jihoo!