Fluid

Fluid (known in Japan as Depth) is a music video game developed by Opus and published by Sony Computer Entertainment for the PlayStation. The game's concept is an interactive sound lab which allows the player to create dance and electronic music. The player uses a dolphin character in 'Cruise Stage' to collect samples for mixing in the 'Groove Editor'. Source: Wikipedia, "Fluid (video game)", available under the CC-BY-SA License.