Joseph Wilde is one of the early pioneers of the Viennese waltz. He provided music at the restaurant "zur Mehlgrube" and later became "Musikdirektor im k. k. kleinen Redoutensaal“.
This piece dates from 1814 and the title refers to Tsar Alexander I's presence in Vienna for the Congress of 1814-5. Alexander was perhaps a better diplomat than a judge of music. There are several "favourite dances" by different composers and this is not the greatest piece of music ever written.