Symphony is an indie developed shoot-em-up video game produced by Empty Clip Studios. It was released for Microsoft Windows in August 2012, and for Linux and Mac OS X in May 2014. The game is played by manipulating a ship and firing on enemy ships, earning points and collecting power-ups that are dropped by the ships. The patterns for the appearance of the enemy ships are based on analysis of a selected music file, either from those that ship with the game or from those already on the user's computer. As the player completes songs, they earn new abilities they can add to their ship, while defeating specific bosses from certain songs will increase the game's difficulty level.