Although the official name for this jazzy ditty is "Mamurogawa Boogie" - as mentioned in Isao Hayashi's (林伊佐緒) discography on his J-Wiki page - it seems to go by "Boogie Mamurogawa Ondo" (ブギ真室川音頭) as seen in the video above, and that caused quite a bit of confusion for yours truly at first.
Anyway, I had first heard of "Mamurogawa Boogie" through the ever-popular Kiyoshi Hikawa (氷川きよし)... Yes, I was curious and was in need of a palate cleanser... What piqued my interest, besides how laid back he seemed as he sang and that sparkly suit of his, was the music done by none other than Hayashi himself. It had the qualities of a funky Jazz tune with the trumpets blaring away, but at the same time it sounded like one of those festive Enka-Min'yo songs people dance to - a good example would be Haruo Minami's (三波春夫) "Tokyo Gorin Ondo" (東京五輪音頭). Part of the lyrics (by Ryo Yano (矢野亮)) even had the guy singing "Ko'rya", which is quintessentially Min'yo. Ah, now I see the connection between the song and its other name.
The late Hayashi, a native of the Yamaguchi prefecture, was named the first-ever singer-songwriter of Japan, and had composed a number of songs for others singers from back in the day, like two of the San'nin no kai fellas, Hachiro Kasuga (春日八郎) and Michiya Mihashi (三橋美智也). For instance, he had composed Kasuga's "Rosario no Shima" (ロザリオの島), which has already been profiled. He had participated in the Kohaku 11 times (consecutively) since it began in 1951, when the event was broadcast through the radio... and when there were only 14 participants, including Hayashi.