 15& released the fourth single "Love Is Madness", featuring Kanto of Troy on February 8, 2015.They performed the song for the first time along with other songs on February 14, 2015 for their Valentine's Day concert for singles.Following four year of hiatus, the expiration and non-renewal of Park Ji-min's contract with JYP Entertainment in August 2019 led to the group's de facto disbanding.