I would be super happy if anyone could help me out with this. Recently I just re-watched Natsume Yuujinchou and heard this amazing song.
I searched everywhere and all I get are piano sheet music.

The song is: Haru wo Shiraseru mono - Yoshimori Makoto
From the "Zoku" season!

I know it's both piano and violin, and ughhh, I just need to get my hands on the violin part, it's absolutely gorgeous!

Thank you so much if anyone can help! :D

Song: Haru wo Shiraseru mono [Soku Natsume Yuujinchou Theme]
Instrument: Violin
Anime/Game: Zoku Natsume Yuujinchou
Artist: Yoshimori Makoto
Album: Not sure!