Jan Adam Reincken (c. 1623 – 1722) was a notable Dutch organist and composer of the Baroque period, primarily recognized for his contributions to organ music. He was born in the northern Netherlands and spent much of his life in Hamburg, where he served as the city’s organist at the St. Nicholas Church. Reincken is best known for his keyboard compositions, particularly his toccatas and partitas, which exhibit a blend of intricate counterpoint and expressive melody. His most significant work, the "Toccata in D minor," showcases his virtuosic style and is often highlighted in the context of Baroque organ repertoire. Influenced by earlier composers such as Jan Pieterszoon Sweelinck, Reincken's music reflects the transition from Renaissance to Baroque idioms. His compositions not only contributed to the development of German organ music but also influenced later composers, including Johann Sebastian Bach, who admired his work. Reincken's legacy is preserved in the rich tradition of organ music, and his contributions remain significant in the study of Baroque music history.