Heartbeat is a song from the soundtrack of BTS World, a mobile game that BTS (Big Hit) has just released in June 2019.
Watch my cover/tutorial here:
Made a Band cover with a backing track (created on my Korg Pa700):
Learn to play the piano with lots of great music at flowkey: http://tinyurl.com/joyce-flowkey. To find my covers, just type “Joyce” into the search bar.