here's david begnaud. >> reporter: nestled in nora, south dakota, population 2, sits a defunct general. >> second verse! ♪ >> reporter: nearly 40 years ago mike pettersson, one of the two people who lives here, purchased this building and fulfilled a lifelong dream. to restore a pipe organ. >> now what am i going to do with it? i'm a bachelor. i don't have a wife and kids to come down and listen to dad serenade them. >> reporter: so mike put an ad in the local paper, inviting people to join him in singing christmas carols while he played the newly rebuilt organ. >> they looked at me like you goofy guy. who's going to do that? well, the rest is history. >> reporter: from nearby towns across south dakota to neighbor's states like minnesota, nebraska and iowa -- >> welcome to nora. >> reporter: -- tens of thousands of people have joined mike to share the joy of holiday music. ♪ jingle bells ♪ ♪ jingle bells ♪ ♪ jingle all the way ♪ >> reporter: mike and his pipe organ have performed every christmas here for the past 35 years. and thanks to dylan munson, whose parents first brought him and