When The Saints Go Maching in

"When The Saints Go Marching In" by Louis Armstrong is traditionally performed in the key of F major. The song has roots in African American spirituals and gospel music and is often associated with New Orleans jazz. Louis Armstrong, a legendary jazz trumpeter and vocalist, recorded one of the most iconic versions of the song in 1938. The origins of the song are believed to trace back to the early 20th century, with various versions and interpretations emerging over time. It has since become a popular jazz standard and is often played during celebrations and parades. Armstrong's rendition showcases his exceptional talent as a musician and his ability to infuse the song with joy and energy through his soulful vocals and improvisational trumpet playing.