Crio is a virtual monophonic analog/FM/Ring Modulation synthesizer to make arpeggios, bass, solos, leads, FX-style sounds, to be used at studio or live. Minimal controls, maximum functionality. It brings facilities to drastically modify the sounds on the fly, while playing. The LFO has special functions for rhythmic uses, such as quantization of waveforms synchronized with tempo. The user must use the Modulation Wheel to check the importance of the modifications that can be done at live.