Franz Joseph Haydn (1732-1809) was an Austrian composer of the Classical Period. He helped establish the forms and styles for the string quartet and the symphony. (Landon, 2020)
String quartet in B flat major was composed between 1757-1759. The fourth movement is the second minuet and trio within the composition. It has a vigorous rhythmic drive. While I was listening this composition, I discovered a strong feeling of three beats. The first beat is strong, the second is lighter and the third beat leads toward to the next first beat. This sequence gives a sense of formality to the dance form. There are two voices can be heard in the piece, which imitates each other. The trio features an elegant melody with an occasional chromatic slide, played over an accompaniment of repeated chords.
Reference:
Landon, H., 2020. Joseph Haydn | Biography, Compositions, & Facts. [online] Encyclopedia Britannica. Available at: <https://www.britannica.com/biography/Joseph-Haydn> [Accessed 2 March 2020]
Haydn, F., 1751. J. Haydn – Hob III:1 – String Quartet Op. 1 No. 1 In B Flat Major. Available at: <https://www.youtube.com/watch?v=FXCYeGovsOw> [Accessed 2 March 2020]