This Fresh Air Weekend segment interviews Ricky Riccardi, author of "Stomp Off, Let's Go! The Early Years of Louis Armstrong," discussing Armstrong's impact on music. The interview covers Armstrong's challenging childhood in New Orleans, his innovative scat singing (originating from a forgotten lyric sheet, according to Riccardi), and his groundbreaking instrumental techniques showcased in songs like "West End Blues" and "Cornet Chopsuey." Riccardi argues that Armstrong was the first Black pop star, transitioning from "race records" to mainstream success. The interview highlights Armstrong's resilience and influence, shaping the sound of 20th-century music.