Shouwa Fanfare

A young girl named Sayoko fascinates people with her brilliant singing voice in the early days of the Showa era. In an effort to make people recognize her, she starts wanting to sing in sound films. It's then that she happens to meet a piano prodigy, Asami, who disregards her singing as bad!!

The curtains rise on the birth of the story of a songstress that glitters with the dreams and love of a young girl in this historical tale.

(from mangaupdates)