This arrangement is from Boccherini's String Quintet in E Major, movement 3. This is Boccherini's most famous work and the 3rd movement, Minuet & Trio, is often referred to as the "Celebrated Minuet".
For 3 pedal harps
"Minuet & Trio" by Boccherini, arr. Haley Hodson(for 3 harps)