Pattern Editor shows a piano keyboard at its left hand edge to assist with note entry. This is commonly called a piano roll referring to the punched paper rolls that were used to play automatic pianos. Selecting ''Scale'' from the menu allows this to be changed to show just the notes of particular scales. Scales include: | Pattern Editor shows a piano keyboard at its left hand edge to assist with note entry. This is commonly called a piano roll referring to the punched paper rolls that were used to play automatic pianos. Selecting ''Scale'' from the menu allows this to be changed to show just the notes of particular scales. Scales include: |