Thanks for your comment. This classical music is “Die Moldau” or “The Moldau”; the 2nd part of “Má Vlast” by Bedřich Smetana or Friedrich Smetana. Thanks.
Thanks for your comment. I have no score sheets, so I played with free styles for every musics without scores. But I found one score for main melodies of this song as below; images.app.goo.gl/cs62Gxtu6T2Dt7Qi8 And source video is below; kzbin.info/www/bejne/mmKXaJule5hmb80 If you wish, enjoy to play with this score sheet. Thanks.