"It was kind of difficult for us because we're not used to it and we had to come up with a song list," said Lisa.
"Hopefully, he'll be able to do this again, and we'll be better organized," she added with a laugh.
Overall, Justin said he enjoyed giving the performance.
"After a couple times, I might get used to it," he said.
When Justin isn't playing piano, he said he enjoys playing outside, riding his bike, and learning more about science - particularly astronomy. He said he also enjoys playing guitar, though don't look for him to perform any guitar solos anytime soon.
"I can tell you right now I'm better at piano than I am at guitar," Justin said with a smile.