Hello, thank you for your class review. Since you didn't tell me exactly where, it's hard for me to look for it now... As you know, the practice can be a bit boring, so I tend to add BGM, but in this case, the voice is adjusted and the BGM is added, so the voice itself can be shortened at the end. This has the advantage of relieving boredom, but... I think the voice can become a bit blurry.. Since this is the first feedback I've heard, I'll watch it for a while and figure out what will be more helpful to students and apply it to the next lecture. Thank you for telling me the part I didn't know. ( _ _ ) Cho Hoon Dream