The PlayStation 2 game Amplitude was developed by Harmonix and is the sequel to the game Frequency.
In the game, a player controls a ship moving down a slightly curved path containing 6 tracks. Each track contains a sequence of notes. As the player hits buttons corresponding to the note placement on the track, the sonic energy from within is released and the music plays. If the player plays enough notes in sequence, the track is captured and the music plays automatically.
Powerups are available which allow the immediate capturing of the track, the doubling of the points scored, slowing down the speed of play, and jumping into freestyle mode (which awards points without the difficulty of playing tracks). If a player continually misses notes, their energy meter reduces until the game is over.
High scores are achieved in the game by quickly moving from track to track, as they are completed, which increases a point multiplier. Tracks with more notes are worth more points, so choosing those over simple tracks is advantageous as well.
Some of the songs are actually "in-house" productions by Kasson Crooker, who served as a musical director for the game and is also a member of the band Freezepop. Some of his aliases include: DJ HMX (HMX standing for Harmonix, the developer of this game), Symbion Project, Komputer Kontroller, and Cosmonaut Zero.
Here is a list of bands who perform in the game, with corresponding song title, in the order they are encountered:
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