During his early years at the court of Prince Nikolaus Esterházy, Haydn experimented with and further developed symphonic techniques. His true originality, however, only became evident toward the end of the 1760s and the beginning of the 1770s in works such as the Quartets Op. 20 and some twelve symphonies.
Symphony No. 49, composed in 1768, marks a pivotal point in Haydn's artistic development. It combines the traditional form of the sonata di chiesa with modern emotional expression. The title "La passione" (The Passion) and its unusual structure suggest a church performance during Lent. This work is considered exemplary of Haydn's Sturm und Drang (Storm and Stress) period.
With the exception of the Minuet Trio in F major, "La passione" is composed entirely in F minor. The work is characterized by a limited tonal palette and unfolds a continuous development reminiscent of the Passion of Christ. In contrast, there is the festive Symphony No. 48 in C major, composed in 1769 for an imperial occasion.
Symphony No. 50, composed in 1773, remarkably blends traditional and modern elements. With its extended introduction and rich orchestration, it presents an impressive mix of conventional and innovative compositional techniques.