I've loved classical music for the longest time and here are some songs that I've played on my instrument or just really like to listen to while studying.
Finale from symphony no.1 by kalinnikov - This song made me very emotional because as Kalinnikov was writing this symphony he was on his death bed. He had all of this music in his head and just had to get it all out before he died at the young age of 34. When you think about his music show many aspects of life itself. https://www.youtube.com/watch?v=wwxoeoW3G_4&t=319s
symphonic movement by Vacáv Nelhybel (very modern and an interesting piece overall may not be for everyone but it sure is fun to play) https://www.youtube.com/watch?v=2yj-M2df8oE
Little rascal by Toshifumi Hinata - It a has a waltz feel to it. I am so obsessed with this song and it perfect to listen to while going on a walk or while fantasizing that perfect life lol. https://www.youtube.com/watch?v=eTyKMJJhAnI
Impromptu also by Toshifumi Hinata- Another good song from this musician also another perfect studying song. https://www.youtube.com/watch?v=9sb9I70CzvY
I've found that there are quite a few good classical song from japanese artist or artist from places other than the US and a lot of times they're a lot better that US artist so don't be afraid to explore everywhere when it comes to music.