colonoscopy prep ?

So i have my scope on a monday. My GI does a two day prep. I am starting it 5pm on saturday. I have an orchestra concert that i have to play in, its about 2 hours long and starts at 3pm on Sunday. Then Sunday night after my concert i do the second half which i am not worried about. My question is will i still be needing the bathroom/pooping my brains out during my concert?

the one sat night is a 12oz bottle of magnesium citrate

it makes me go within 1-2 hours. can last a few hours.

if you need to go 18 hrs later, that may be uc not prep

When I had to take that the worst part was the first few hours. If your concert isn't until the next afternoon I'd say you should be okay, but everyone is different. Try not to eat right before the concert because when I took it it made food go through my system quickly. Good luck in your concert!