Talk:Just Dance 2017/@comment-30115169-20161008153659/@comment-1465604-20161009000406

Neither neither costs money nor does it require a subscription. You create an account through which you unlock special uPlay points by just playing the game normally (seriously, all of the challenges are easy as pie to finish within an a quarter of an hour) and then use said points to unlock the songs.

IIRC, uPlay unlockables are always on-disc, so they probably count towards the song total.