In this article you'll learn how to automate Tonic parameters inside Sunday Keys for MainStage 2020 so Tonic will automatically change as you change patches. This is an advanced tutorial, so make sure you are feeling comfortable in MainStage before you attempt it.
*Please Note* MainStage version 3.4.3 includes a bug that slightly alters the setup process for Automating Tonic Parameters on Patch Change. This is explained in the video above starting just after the 5 minute mark.