issue 18255 by Victor Talking Machine Company in 1917. Originally simply called "jazz", the music of early jazz bands is today often referred to as "Dixieland" or "New Orleans jazz", to distinguish it from more recent subgenres. The origins of jazz are in the musical traditions of early twentieth-century New Orleans, including brass band music, the blues, ragtime and spirituals, and some of the most popular early standards come from these influences. Ragtime songs "Twelfth Street Rag" and "Tiger Rag" have become popular numbers for jazz artists, as have blues tunes "St. Louis Blues" and "St. James Infirmary". Tin Pan Alley songwriters contributed several songs to the jazz standard repertoire, including "Indiana" and "After You've Gone". Others, such as "Some of These Days" and "Darktown Strutters' Ball", were introduced by vaudeville performers. The most often recorded standards of this period are W. C. Handy's "St. Louis Blues", Turner Layton and Henry Creamer's "After You've Gone" and James Hanley and Ballard MacDonald's "Indiana". 1920s A period known as the "Jazz Age" started in the United States in the 1920s. Jazz had become popular music in the country, although older generations considered the music immoral and threatening to old cultural values. Dances such as the Charleston and the Black Bottom were very popular during the period, and jazz bands typically consisted of seven to twelve musicians. Important orchestras in New York were led by Fletcher Henderson, Paul Whiteman and Duke Ellington. Many New Orleans jazzmen had moved to Chicago during the late 1910s in search of employment; among others, the New Orleans Rhythm Kings, King Oliver's Creole Jazz Band and Jelly Roll Morton recorded in the city. However, Chicago's importance as a center of jazz music started to diminish toward the end of the 1920s in favor of New York. In the early years of jazz, record companies were often eager to decide what songs were to be recorded by their artists. Popular numbers in the 1920s were pop hits such as "Sweet Georgia Brown", "Dinah" and "Bye Bye Blackbird". The first jazz artist to be given some liberty in choosing his material was Louis Armstrong, whose band helped popularize many of the early standards in the 1920s and 1930s. Some compositions written by jazz artists have endured as standards, including Fats Waller's "Honeysuckle Rose" and "Ain't Misbehavin'". The most recorded 1920s standard is Hoagy Carmichael and Mitchell Parish's "Stardust". Several songs