Thought the BGM for TV advert by Kakakucom(株式会社カカクコム) recruitment app Kyūjin-box(求人ボックス) featuring Kōji Yakusho(役所 広司) was the intro to Roger Miller's "England Swings"
https://www.youtube.com/watch?v=NK66IGVVE7Y
*Wrong*
Turned out to be Bobby McFerrin's "Don't Worry Be Happy"
https://www.youtube.com/watch?v=AFDOSq6Wxa0&list=PLtFFA8euM8uxTMn0_8GhVLIz1txCvJfjc

BTW "England Swings" was released 60 years ago. How time flies!😲
#RipVanWinkle #UrashimaTaro #浦島太郎

England Swings (Re-Recorded In Stereo)

YouTube
Nezame-no-toko Gorge - Nagano

Nezame-no-toko means 'bed of awakening' and named after an old, famous legend.

JapanTravel