Roland AIRA Compact E-4 Voice Tweaker Quick Reference Card
Product: https://www.roland.com/global/products/e-4
Based of version 1.02 of the manual: https://static.roland.com/manuals/E-4_manual_v102/eng/index.html
This was inspired by the S1 reference card: https://github.com/candlerb/roland-s1-quick-reference