MIDISequencerAUv3

A great start point for the making AUv3 MIDI sequencer apps.

Key Concepts

Swift/Storyboard for UI
Objective-C for Audio Unit
C++ for DSP (MIDI Sequencing)
TAAE for main/audio thread value passing.
std::vector for dealing with custom c-struct arrays. (MIDI Sequencer Steps Data Source)
Factory and custom presets.
AU Parameters