Red Snow 

The setting is Imperial Russia. A young girl, Minya, grew up persecuted and called ”witch” and ”red snow” due to a superstition. After losing her home and falling into poverty, in a strange twist of fate, her hidden music talent is recognized by the great composer Tchaikovsky. (Source: Tezukaosamu.net, translated) Note: published in Shoujo no Tomo 1955/01-05