A bad seafood experience in Cannes meant this reporter was unable to get to the Music Hack Day session on Monday, which presented the apps cooked up in 24 hours by a group of coders and music services. Thankfully, Evolver.fm is reporting on the 10 final projects. They’re ace. Dance Fight is ‘a real-time dance battle game with robots’; Double A-Side lets you flip songs when flipping over your smartphone; Geotracklist offers playlists by location; I’m A Big Fan is a way to bone up instantly on a band’s history, music and gigs; and Lyrics Hangman is… well, it is what it sounds. APIs used by the apps include 7digital, Flickr, Last.fm, MuseScore, MusicBrainz, MusiXmatch, Songkick, SoundCloud and The Echo Nest. Stand by for the second batch of five tomorrow.