Louis Armstrong (1901-1971) fundamentally transformed jazz and American music. His revolutionary approach to improvisation, rhythmic phrasing, and vocal expression set the standard for generations of musicians across all genres. Armstrong's technical mastery of the trumpet combined with his infectious personality made him one of the most influential and beloved artists in music history.
Fats Waller (1904-1943) was a virtuoso pianist, organist, and songwriter whose compositions bridged jazz, stride piano, and popular song. His wit, harmonic sophistication, and prolific output shaped the sound of jazz and standards repertoire. "Ain't Misbehavin'" stands as one of his enduring masterpieces, recorded memorably by Armstrong in 1929.