Sonate H-moll, Op. 4, No. 6 for flute and basso continuo

Johann Baptist Wendling (1723–1797) was a premier flute virtuoso and composer of the 18th century, recognized as a leading figure of the revolutionary Mannheim School.
Born in Ribeauvillé, Alsace, into a musical family, he began his professional life in service to Christian IV, Duke of Zweibrücken, who was a generous patron of the arts. It was here that Wendling honed the technical precision and tonal beauty that would later define the "Mannheim style."
In 1751, he joined the court of Elector Carl Theodor in Mannheim. By 1752, he was appointed principal flutist of the court orchestra—then considered the finest and most disciplined ensemble in Europe.
Wendling is most famously remembered for his profound influence on Wolfgang Amadeus Mozart. When Mozart visited Mannheim in 1777–1778, he befriended Wendling. Despite Mozart's famous claim that he "did not like the flute," he was so captivated by Wendling’s "admirable" and "noble" playing that he wrote several major works for him, including the flute part in the Sinfonia Concertante (K. 297b). Wendling was instrumental in securing commissions for Mozart, including the famous flute concertos and quartets commissioned by the amateur flutist Ferdinand De Jean.
Wendling wrote extensively for his instrument, including concertos, quartets, and several sets of sonatas. His compositions moved away from Baroque ornamentation toward a Classical aesthetic defined by "singing" melodies, dramatic dynamic shifts (crescendos), and idiomatic technical challenges that exploited the improved intonation of the mid-18th-century flute.
As a teacher, he shaped the next generation of European flutists, ensuring the Mannheim tradition survived the court's eventual move to Munich in 1778.