There is one already. Use Melodyne Essentials that comes with Studio One Professional. Select your event, right click it, choose "edit with Melodyne". Wait for Melodyne to open up in Studio One. Once it has analysed the audio, close the editor. Now, drag an instance of Presence XT, select an instrument sound. Now, drag the audio event you selected to the instrument track. BOOM! The audio is converted to MIDI. It is actually pretty darn accurate too.