Nook's Cranny? Hmm. I guess this is before his nephews Tommy & Timmy ran Nookling Junction! The soundtrack heard here sounds like Nook's Homes' theme, as well as Nook's stores in the past! However, this version of Tom Nook's theme is actually from the Japan only release 'Animal Crossing' movie, 'Doubustu No Mori'...yeah I'm not that good with my Japanese! I may be correct, though I might be wrong!