If the song is repetitive and simple like the nursery rhym Twinkle Twinkle Little Star which ou can find a page turning rhythm to use it as your chant.
Even saying the alphabet over and over is fine just keep it simple and let it help you to stay relaxed.
If is a complicated song with a lot of lyrics just gently remind yourself that you're PhotoReading right now and come back to the chant suggested.
Alex
