Louis Armstrong was raised in difficult circumstances and was known for which musical innovation?

Louis Armstrong is renowned for his pioneering influence in the world of jazz, particularly through his innovative style of scat singing. Scat singing involves the vocalization of nonsensical syllables and is characterized by its improvisational nature, where the voice mimics instruments and typically includes syncopated rhythms and melodies. Armstrong's use of this technique brought a new level of creativity and expressiveness to vocal performance in jazz music, allowing singers to explore melody and rhythm in a way that was previously less common. He popularized this style during the 1920s and 1930s, which subsequently had a lasting impact on jazz and influenced countless musicians across genres.

While other musical innovations, such as syncopation in jazz and the fusion of classical and jazz styles, were certainly elements of Armstrong's broader musical contributions, his distinct legacy is most closely associated with his unique ability to use scat singing as a key element of his artistry.