Generates MIDI messages for you, without having to have a usual hardware controller around – it’s always there when you need it.
Great for playing around, testing complex MIDI setups, when you’re away and don’t have all your usual gear.
It produces Note On, Note Off, Control Change and Pitch Bend Change messages on demand, with easily configureable parameters. Has a simple interface so it’s clear exactly what it’s doing, and can even be told to stay on top of other apps you have running so it’s always accessible.