WOLF HOWL HARMONY is a four-member vocal and rap group born in the second chapter of the male division of iCON Z - Dreams For Children -, the biggest audition in LDH history. Their debut track 'Sweet Rain', released on 23 Aug last year, reached No. 3 on the Billboard Japan Hot 100 and No. 1 on Spotify's Viral Top 50 JAPAN. Riding such momentum, they will release their second single 'Frozen Butterfly' on 14 Feb (Wed). M-ON! will broadcast the music video of the new song, as well as live footage of all their previous appearances, to celebrate the release! This special programme will look back on WOLF HOWL HARMONY's activities in their first year of debut.