Approach to learning doublings

Finger movement timeline for building doublings.

How close should you play the gracenotes? For different reasons (expression, unison, etc.), doublings can be played spaced or as tight as possible. They need to be at least close enough as to not interfere with the melody.

To a note

Doublings to a note are played as part of the actual transition to that note. Whatever the note you are on, the destination note will determine which doubling to play. Start by changing notes with a G gracenote, then play the 2nd gracenote corresponding to a doubling on the destination note.

Finger movement timeline for a doubling.

Collapsed doublings

No matter how close to each other you play the G gracenote to the 2nd gracenote, there always needs to be two distinct gracenotes in the doubling. A collapsed doubling is when there is a partial (or complete) overlap between the G gracenote and the 2nd gracenote.