I'm doing an assignment on a baroque period composition, and I chose Violin Concerto No.1 in A minor by J.S. Bach. One of the things I need to do is explain why it was actually composed. I'm having a bit of trouble figuring this out, since a lot of websites say that it's not known. So if it actually is totally unknown, what's a likely reason? What's a reason that Bach could have composed this for?
Just for reference, the question is: Introduce a piece of music. Give details about:
• Composer
• Title
• Where & why first performed
• Musical elements & instrumentation- Complete the table. What makes this piece typical of the era?
• Other interesting/ relevant information
The part I'm worried about is "where and why first performed". In my research already, I've found that Bach composed this piece while he was director of the Collegium Musicum in Leipzig, and that he could have possibly composed it for himself to play the lead part.
But I'm not really sure. Any answers?