For the St. Louis Blues, i listened to two different versions: The Original Dixieland Jass Band that played in 1917, and Sidney Bechet that played in 1932. After listening to both versions of the song, i can conclude that although both versions of the song have genearlly the same tunes, the two versions are played very differently. First of all, the version by Sidney Bechet gives off a more orchestraic feeling to it, where, there are a lot of different instruments playing the song, the band also plays very loud with many high pitched wavey notes to it, all that makes it more of a large orchestra rather than a small group of musicians. However, on the other hand, in the original version, the whole song put more emphasize on the trumpet. Also, there isnt as much melody in the original version as there is in the Sidney Bechet version, meaning that there is a lot of improvisation in the song.
Lastly, what i noticed was that the Sidnet Bechet version of the song had a lot of solos by different instruments such as the trumpet, saxaphone, trombone, etc. and all of them were rehersed beforehand, you can tell because the solos are very confident and bright, they had to have a lot of practice before hand. However, in the original version, there was mainly only the trumpet that stands out. Plus, there is actually singing in the original version, whereas the Sidnet Bechet was purely instrumental.