we come back, singers, movie stars and average joes. even one of the world's richest men saying aloha to an old favorite. >>> finally this evening we end with a happy note, thanks to an old instrument that's one -- once again is striking a cord. nbc's kevin tibbles with a little night music. >> reporter: okay, so close your eyes and listen. instantly carried away to the tranquility of the hawaiian islands? you're not alone. it seems a lot of people want to feel that way these days. because the ukulele is officially hip. however you pronounce it. sure, the questionably hip tiny tim played one. but these days, everyone from actress and singers, even warren buffett have taken the four-string plunge. so are lots of others. this weekend in new york, hundreds ukeed it out with workshops and ukulele vendors and concerts. >> i think it is a bond for many people, in what are somewhat uncertain times. >> reporter: they're buying them, too, at chicago's old town school of music. >> that's a nice little size to hold on to. it has a nice little sweet sound. >> they've been selling like hot cakes.