The manga began in 2009 in Monthly Shonen Magazine and has twenty-five volumes released so far through Kodansha Japan.
It’s being simulcast as Those Snow White Notes on Crunchyroll and they’ve now rolled out the opening theme song with “Until I Wake From Dreaming” by Miliyah Kato and Yoshida Brothers.
While that’s been long done and over with, their latest work with Mashiro no Oto arrived with an April 2nd, 2021 debut.
Those Snow White Notes - Ending | Until I Wake From Dreaming