Please check out the helpful new series of tutorials from Rob Jones that digs deep into the many ways that AutoTheory will help your compositional output.
AutoTheory Overview: www.youtube.com/watch?v=1l8cHfabzgQ
Advanced Chord Design: www.youtube.com/watch?v=L-M0_IaFM_M
Open Arpeggiation System: www.youtube.com/watch?v=fWZy_hbIOaI