Scat singing

Scat singing likely originated in African American vocal traditions, where singers used nonsense syllables to mimic instruments or to express rhythmic and melodic ideas. The first recorded instance is often attributed to Louis Armstrong, who in 1926, during a recording of "Heebie Jeebies," dropped his lyric sheet and improvised with syllables, creating a sensation.¹ However, earlier examples exist, such as Don Redman's 1924 recording with Fletcher Henderson, and some scholars trace the practice to West African call-and-response patterns and field hollers.²

Scat singing involves improvising melodies using syllables that often mimic the timbre and articulation of instruments. Singers use a variety of sounds, from consonant-vowel combinations to percussive clicks, to create rhythmic and tonal effects. The technique requires a strong sense of pitch, rhythm, and harmonic awareness, as the singer must navigate chord changes in real time. Some singers, like Ella Fitzgerald, developed a highly virtuosic style, incorporating rapid runs and harmonic extensions, while others, like Cab Calloway, used scat for theatrical and comedic effect.³

Ella Fitzgerald's scat singing, particularly her 1960 live recording of "How High the Moon," is considered a landmark, showcasing her ability to trade fours with instrumentalists and improvise at breakneck speed.⁴ Other influential scat singers include Sarah Vaughan, Betty Carter, and Jon Hendricks, who extended scat into vocalese—setting lyrics to existing instrumental solos. In the 1960s and 70s, artists like Al Jarreau and Bobby McFerrin pushed the boundaries further, incorporating vocal percussion and multiphonics.⁵

Scat singing has roots in vaudeville and minstrelsy, where performers used nonsense syllables for comic effect, but it also appears in non-jazz contexts, such as in the work of blues singer Bessie Smith and in the "vocalese" of Lambert, Hendricks & Ross.⁶ A lesser-known fact is that scat singing was used as a mnemonic device by early jazz musicians to remember complex solos, and it has been studied by ethnomusicologists for its parallels with African vocal traditions. Additionally, scat singing has influenced beatboxing and hip-hop vocal techniques, demonstrating its lasting impact beyond jazz.

Vocalese

A style of jazz singing that sets lyrics to instrumental solos, often using scat-like syllables.

Trading fours

A jazz practice where musicians alternate four-bar solos, often between a singer and an instrumentalist.