This is the potty dance song that Rachel wrote and sang herself in the first episode. The background music is not Rachel's music. The lyrics are:

When you kneel,

Do you sit on your heel?

Move, shift, sit on your feet

Get into the potty beat!

Ooh ahh, potty dance! x6

Does your tummy ache,

After you just ate?

Move, shift, sit on your feet

Get into the potty beat!

Ooh ahh, potty dance! x4

Do you get grumpy before you poop, but happy after?

Do you like to move a little faster?

Move, shift, sit on your feet, get into the potty beat! x3

Ooh ahh, potty dance! x4

Encourage your child to sing along, but notice the words. These are signs of withholding, and if you notice your child doing any of these things, offer a snack break to give your child an opportunity to go on their own, without them having to pause the game. (DO NOT tell them to go the bathroom - nobody likes to get called out for that.)