Cudo,

Have a read through the section on 1st and 2nd endings found at the link that I've given above.

What you are asking is that for the first time through, the four chords need to play. Then when it repeats after playing the G13 chord, you want the music to jump to the 2nd ending to play Cmaj7. The first ending will include Cmaj7 | A7b9 and the second ending will have only Cmaj7.

The image below shows how your requirement would be notated in standard music notation.



Hope this helps,
Noel


MY SONGS...
Audiophile BIAB 2025