Aコードで行こう (Take The "A" Chord) is a trick-taking card game from Japan, with a theme of Jazz. Players become jazz musicians, and will compete in the strength of the chord. Modulation, whereby the strength of the chord changes, is the key to taking the initiative in this game. Players score by winning the correct number of tricks, so don't win too much!
For more information, visit the BGG listing.