https://www.youtube.com/watch?v=ppOJe2-s3B8
Rough English translations as follows:
1:49 Miihi/Rima/Ayaka: Thank you very much~!!!
1:51 JYP: Huhaha!
1:53 JYP: Auhahaha!
1:56 JYP: Miss Ayaka, I'm really wondering if you're actually the same Ayaka that I knew before.
2:01 JYP: When the song first began, you did that wave (dance move)--do that again, please.
2:07 Miihi: SFX
2:07 Ayaka: Waves*
2:12 JYP: Like, I couldn't imagine that your back could bend that much! (T/N: less literally, JYP is amazed Ayaka could be so flexible with her hip/waist and do a proper wave)
2:16 JYP: That shook me while watching the performance.
2:21 JYP: For the first time then, I felt convinced you could be a proper idol in a girl group.
2:39 JYP: Miss Miihi, you seem like a completely different person with each new song--I find that incredible.
2:48 JYP: When you sang NOBODY...
2:53 JYP: ...and the time you sang Yuki no Hana...
2:56 JYP: ...and now singing this cutesy, energetic kind of song--you seem like a different person.
3:02 JYP: Your ability to immerse yourself in each new song is extraordinary--and I think that helps transform you into a "new person" each time.
3:19 JYP: Rima, today you were lacking nothing--if I had to give you a number grade, a 100 for you, Rima.
3:28 Rima: Thank you very much.
3:30 JYP: You sang super well today...
3:32 JYP: ...and your dancing was full of confidence and your individual "colour," and not just an imitation. (T/N: of the original dance routine)
3:42 JYP: It was beyond my expectations!