Nice.
Basically the gist of what they were saying:
-"Ukulele" means "jumping Flea". Hawaiian instrument, based on an older Portuguese instrument (and other historical stuff). Now it's famous in Japan, America, Europe and all around the world.
-It's distinct sound, works well in ensemble on the high end, has been used as a learning tool for music students, but can be played as a serious instrument on its own, great for hobby.
-There are different sizes, the "Alto" (which I believe is what we call Concert) is a bit bigger than the Soprano, has longer neck and can be used in concert.
-There exists other types such as Baritone and even a 6-string one called 'guitalele'.
-The techniques of a guitar can be used, but with 4 strings, you can do faster strokes and use the thumb a lot (then he demonstrates arpeggio, tremolo, roll strokes,)
-It allows for simpler, to-the-point arrangements of songs
-Compared to guitar, its smaller so easier to hold and is great for children
-The lady has only played for 7 months, and demonstrates what can be learned in that time
-They are part of an online Ukulele Club* (*-Koreans call internet clubs "Cafe"s. Korean internet culture). There are people of all ages from very young to 60 and older, with the majority being 20-40
-They sometimes do performances within the community. Not big scale concerts, but things like volunteer service, etc.
-At the end they demonstrate a small ensemble piece together (Koreans like to be very structured in how they progress in music with standard repertoires)
-In summary, the host says that it was great to hear this instrument, and that it makes people happy.