Harmony Hustle

Harmony Hustle is a party game in Mario Sports Mix where the sport of this game is volleyball. This game can be played with up to four players, in three different courts: Peach's Castle, DK Dock, and Bowser Jr. Blvd.

The objective of the game is to score as many points as possible. Players can score points by hitting balls of their respective color. A colored circle will show where the ball will land; the player of that specific color must hit that ball. Player 1 gets the blue balls; player 2 gets the red balls; player 3 gets the green balls; player 4 gets the yellow balls.

Players earn 10 points by hitting a ball. Collecting coins gives players an additional 10 points for each coin collected. Spiked balls make players lose 50 points, and will end their combo. Hitting a multi-colored ball gives the player 50 points. Any player can hit the multi-colored balls.

Players don't earn points when the CPU players hit any balls, unless they're multi-colored. Also, if the CPU players hit any spiked balls, points won't be deducted. Lastly, players do earn points if the CPU players grab any coins.

Other obstacles can pop up as well, such as Banana Peels and Mini Mushrooms. Hitting these can hinder players, which can cause combos to end.

If players manage not to miss any balls, they earn bonus points. The game has a sense of rhythm to it, as depicted by the music that is played during the stage, which differs, depending on the court being played on. Just like in a volleyball game, there is no time limit, but the game will end when the music ends.

These are the songs available, in three difficulties:
 * Classic Ocean
 * Chocobo Rhythm
 * Mario Athletic

The player can also unlock medley songs by achieving some sort of high score for certain songs. Alternatively, the medleys can be unlocked after completing 3 random objectives on the alternate paths in one of each three Extra Cups. The medley songs tend to be harder than the normal songs, since many kinds of obstacles can pop up to mess up the players.

The medley songs are:
 * Mushroom Mix Medley
 * Blossom Mix Medley
 * Star Mix Medley