Freddy Fazbear: Ultimate is a combination of "Freddy Fazbear" and the unreleased "Freddy Fazbear 2", which contain mashups of the famous meme "Freddy Fazbear Ur Ur Ur" with various popular songs. Each mashup is represented by a toy from the FNAF game.
Click on the animatronics toy to listen to the song. Press again to stop the playback. The game can only play 1 song at a time.