My best setup for live (Tools)
Audiobus 3 because it allows you to add an instrument in the output slot.
Because it's the only AUv3 tuner
Because it's a stand alone App | Because it records the Midi message | Because it can filter a MIDI chammel
Because it can be more easy sometimes to convert an input MIDI signal that to program an external hardware
with it you will be able to do want you want. Split your Master keyboard | Recall a preset | Filter MIDI events | Convert MIDI events...
Because it's the only App I know that can be controlled with an external hardware and allows you to jump to a maker. Anytune will be able to send this marker song position to all your MIDI Apps as well as a Start Stop MIDI message.
Chord progression player
Dream Foot allows you to play a Chord progression (Custom Chords & Custom Progression) with only one key from your external MIDI Controller. A jam mode is Aldo available.
Because it's an AUv3 host | Beat Buddy full integration | The only looper I know that allows you to play your first loop without using a metronome.