Rule 21: Nobody has to know...

... that you didn't pull the second page of the hymn out of the hymn box. And didn't realize it until you were halfway through your introduction...

You can fix this. Just keep playing. With strength and flexibility you previously didn't know you had, reach your left hand across your body to grab the hymnal that you foolishly put just out of reach of the piano (to reduce clutter on the piano) and open it to the right page as fast as you can.
Throw in a little ritard and you'll be good to go. Nobody needs to know.


* Don't try this at home
** Refer to Rule 10 and 10c. #discountdoublecheck