Along with Hachiro Kasuga and Hideo Murata, he was regarded as one of the most notable singers to have established the genre enka.

[4] Mihashi was among the leading Enka singers in his time and was known for his high-pitched and elastic singing voice.

[1] In 1960, he sang the theme song for the tokusatsu series Kaiketsu Harimao, which was created by Shotaro Ishinomori.

In the latter half of the 1970s he reinvented himself, adopting a 'rough' style and hosting a radio program aimed at young men, from whom he acquired the nickname "Michie" (ミッチー).

Mihasa died in hospital in Osaka on January 8, 1996, from multiple organ failure at the age of 65.