We’ve followed the progress of the JoeCo Black Box Recorders - simple 24 Channel rackmount standalone recorders that use to standard USB devices to track and playback and come with a variety of audio interface options.
They now have an app which allows control of functions through the iPad interface. Including playlist ordering and creation, record and playback and much more. Available soon.
On the fly arrangement of chords and melody
Still sticking up for the little guy after 15 years