level more than halfway through the campaign that is based on a slower, mellow song, titled "A Christmas Gift", in which the agents assist a young girl in reuniting with the spirit of her deceased father. The mission's first phase replaces all percussion and interjections occurring from playing notes correctly with subtle chimes and removes the spoken countdown to go along with the tragic atmosphere and the mission's song, "You're the Inspiration". The main campaign culminates in a climatic planetary crisis in which the Agents, along with all humanity and the people they helped in prior levels, facing off against an alien invasion staged by the Rhombulans (a portmanteau of rhombus and Romulan), who abhor music and use a petrification ray to enforce a ban on it. However, unlike Ouendan, this final scenario is divided into two levels, with the first level showing the Agents rallying prisoners to stage a riot against the aliens before sacrificing themselves to the ray, leading up to the second and ultimate final level where the people devastated by their sacrifice gather resolve and determination to reverse their petrification and help organize an epic musical counterattack against the aliens, triumphantly unleashing a blast of spirit energy to the sky to obliterate the Rhombulan mothership. Several of the levels in Agents are thematically similar to those found in Ouendan; for instance, a level involving time travel to help a popular historical figure in the past (Episode 4), a level taking place inside the human body, and a tearjerker level. In addition, some of the story characters from Ouendan have cameo appearances in Agents. In the final two stages, as in Ouendan, all of the characters in the game reappear. Episode & soundtrack Elite Beat Agents has fifteen scenarios and three unlockable bonus scenarios, with a total of nineteen music tracks. Music heard in the game is performed by cover artists, and in most cases, adjusted for length to be three minutes long. Notes Gameplay The fundamental aspects of gameplay are unchanged from Ouendan to Agents. The stages of Agents are presented in a comic book fashion. After the introduction to a character and their problem, the agents are deployed and the action begins. The play mechanics involve performing one of three actions with the stylus in various combinations. Hit Markers - Operated by tapping numbered circles. Phrase Markers - Operated by tapping and holding the stylus