Louis Armstrong collaborated with other musicians and composers.

Louis Armstrong, one of the most influential figures in jazz, indeed collaborated with many other musicians and composers throughout his career. A few of his notable collaborations include working with the pianist Earl Hines, the singer Ella Fitzgerald, and the composer and bandleader Duke Ellington.

A famous collaboration with Earl Hines was on the recording of the song "Weather Bird." The chemistry and interplay between Armstrong's trumpet and Hines's piano is considered one of the finest examples of early jazz improvisation.

Armstrong's collaborations with Ella Fitzgerald are among the most cherished in the jazz world. Their album "Ella and Louis," which includes classics such as "Cheek to Cheek" and "They Can't Take That Away from Me," showcases the fluid blend of her voice with his trumpet and vocal style.

Additionally, Armstrong's work with Duke Ellington resulted in the album "The Great Summit," where Armstrong's distinctive trumpet and vocal performance complemented the sophisticated compositions and arrangements of Ellington, bridging the gap between New Orleans jazz and more structured big band sophistication.