Answer
Waltzes are the musical genre Johann Strauss I is renowned for. His compositions, characterized by their lively rhythms, elegant melodies, and Viennese charm, played a pivotal role in popularizing the waltz during the 19th century. Strauss's waltzes, such as "The Blue Danube" and "Radetzky March," became beloved worldwide, establishing him as one of the most celebrated composers of the Romantic era.