SOFTWARE BASED GUITAR TO MIDI. MiGiC is an audio software that converts your electric guitar to MIDI with minimum latency and great accuracy. It is packed with powerful features that will open up a new world of possibilities for musicians performing live or working in the studio. Related: List of the 18 best Free Synth VST Plugins. Guitar Rig 5 Player. It sounds just as good as the full version, the BIG difference is the amount of cabinets. Size 2.25 MB / 1.81 MB Revitar 2 is a guitar synthesizer and can produce a wide variety of guitar sounds and playing styles.