Louis Armstrong, also known as Satchmo, was a legendary American jazz trumpeter and singer. Born in 1901 in New Orleans, he revolutionized the genre with his unique improvisational style and powerful voice. Armstrong's career spanned five decades, during which he recorded numerous iconic songs such as "What a Wonderful World" and "Hello Dolly." His infectious energy and charismatic stage presence made him one of the most influential figures in music history. With his groundbreaking contributions to jazz, Louis Armstrong remains an enduring icon whose impact on the genre is still felt today.