Johann Strauss Sr. was an influential Austrian composer and conductor, born on March 14, 1804, in Vienna. He is best known for his contributions to the genre of waltz music, which became immensely popular in the 19th century. His most famous work, the "Radetzky March," remains a staple in classical music performances today. Strauss Sr. was the father of Johann Strauss II, who would also become a renowned composer. Despite facing competition from his son, Strauss Sr. established a successful career, leading orchestras and composing numerous dance pieces. He passed away on September 25, 1849, leaving a lasting legacy in the world of music.