What is the reason why piano sheet music and accompaniment audio are included together in the violin sheet music book?
Looking at the structure of the sheet music book, I noticed that piano sheet music and mp3 files are included along with the violin part, which made me wonder how this helps when practicing alone.
This is to help you complete the piece like an actual performance by playing the mp3 accompaniment audio track and adding your own sound alone, even when there is no accompanist by your side to play together.
While compiling 11 classical pieces of sheet music, it provides piano accompaniment sheet music and mp3 audio downloads together in a single book in addition to the violin part score[1][2].
It is easy to practice alone. The violin produces a full resonance when harmonizing with piano accompaniment, but in daily life, it is difficult to have an accompanist by your side every time. When you play the downloaded mp3 accompaniment audio and draw your bow, you can learn the beat and harmony as if on an actual stage even in a space by yourself[3]. Piano sheet music is also included, so there is no need to obtain sheet music separately when directly coordinating with an accompanist later[4].
This purpose of the book originated from the shortcomings of existing instructional materials that Franz's CEO Kim Dong-yeon felt while majoring in violin and teaching students[5]. hmmm, it is a thoughtful consideration that helps one completely finish a piece of music even alone, so as not to get exhausted just memorizing notes on sheet music without an accompanist.

The specific list of titles for the 11 included classical pieces has not been confirmed yet.