AmplitudeAmplitude is a music video game developed by Harmonix for the PlayStation 2. It is the sequel to Frequency. The game was released on March 25 2003 In Amplitude the player controls a beat blaster ship across a lane of six tracks, each track representing a musical instrument and containing note gems that the player shoots at in time with the music. The player earns points for accurate playing and increases their scoring multiplier by playing a series of