Persist - we don’t use MIDI live but we have used Aron Nelson’s UNRealBook for iPad on stage for the past 3 years for lyric sheets (pdf) and a wonderful definable ‘transmogrify’ button to trigger audio clips. It might be worth a look. Aron is quite responsive if you do wish to contact him…https://unrealbook.uservoice.com/knowledgebase/articles/294959-how-to-create-midi-strings-to-switch-banks-program