Video game music is the soundtrack or background music accompanying video games. Originally limited to simple melodies by early sound synthesizer technology, video game music has grown to include the same breadth and complexity associated with television and movie soundtracks. While simple synthesizer pieces are still common, game music now can include full orchestral pieces and licensed popular music. Video games can now also generate or alter their soundtrack based on the player's current actions or situation, such as indicating missed actions in rhythm games.