In classical music archives, a "part1.rar" file for this collection usually contains the first half of Handel's major concerto sets:
This is Handel's most famous set of concerti grossi. A "Part 1" usually includes: Concerto No. 1 in G major (HWV 319) Concerto No. 2 in F major (HWV 320) Concerto No. 3 in E minor (HWV 321) Concerto No. 4 in A minor (HWV 322) Concerto No. 5 in D major (HWV 323) Concerto No. 6 in G minor (HWV 324)
Some collections group Opus 3 and Opus 6 together. If this is an Opus 3 collection, "Part 1" may contain Concertos Nos. 1–3 (HWV 312–314) . How to Use the File 12 Concerti Grossi, Op.6 : Handel, George Frideric
The file is the first part of a multi-volume RAR archive typically used to share high-fidelity audio or digital sheet music collections of George Frideric Handel's Concerti Grossi . Likely Archive Contents