Band N.Flying will hold the live concert 'Once Upon a Snowball' at Korea University's Hwajeong Gymnasium in Seoul from December 24 to 26, FNC Entertainment announced on the 29th. The concert title means that, like a film that begins with 'Once upon a time', the band will unfold a special winter story that fills ordinary winter days with warm memories. N.Flying released its ninth mini album 'Still' on the 8th of this month. The album sold more than 110,000 copies in its first week, setting a new record for the band.