Lee Hyun, who's been sweeping the music charts with his solo track, "You Are The Best of My Life", has released a digital single, titled "Although You Said So", this past week which features the hip-hop energizers�Mighty Mouth, and he will begin promotions on tonight's M! Countdown. Produced by Big Hit's Bang Shi Hyuk, the song features Lee Hyun's characteristic vocal color with a hip hop addition through the guesting of Mighty Mouth. The three gentlemen are known to have nurtured a strong friendship through various appearances on athletic shows, and their smooth teamwork will be showcased through this new single. Check out their performance stage below!