Johann Sebastian Bach - Fugue in A major, BWV 949 (Arranged for Brass Quartet in F Major)

This early Bach fugue (BWV 949) showcases his mastery of counterpoint with a subject featuring stepwise motion after an initial "repercussive" motive. Notable for its use of inversion in distant keys like F# minor and chromatic alterations enabling modulations to relative minor, the fugue employs two countersubjects. Though structurally repetitive, it displays growing exuberance with episodic violin-style figuration, culminating in a pedaliter coda where ornamentation triumphs over strict counterpoint.