Les Double Six

Vocalese is a jazz vocal style in which singers write and perform original lyrics to pre‑existing instrumental melodies, improvised solos, and full ensemble arrangements. Unlike scat singing—which uses non‑lexical syllables—vocalese uses fully formed words that mirror the exact rhythms, inflections, and contours of the original instrumental lines. The result is virtuosic, text‑driven performances that retain the swing feel, bebop phrasing, and harmonic sophistication of modern jazz. Vocalese is frequently realized by soloists and by vocal groups that harmonize transcriptions of big‑band or small‑group arrangements, often employing tight, jazz‑choral voicings and brisk, swinging tempos.

French jazz is the French branch of jazz that took root in Paris and other urban centers after World War I, when African American musicians and touring bands introduced the music to a receptive café and cabaret culture. It blends American jazz idioms with French musical sensibilities, notably chanson, musette waltzes, and a refined classical ear for color and melody. Its sound ranges from the acoustic swing of the 1930s Hot Club style (guitar- and violin-led ensembles) to postwar bebop, cool and modal currents, free improvisation, and later fusions with chanson and electronic music. Hallmarks include lyrical, song-like themes, supple swing feels, elegant harmonic voicings, and, in some strands, the distinctive "la pompe" rhythm of manouche guitar and the timbre of accordion and violin. Today, French jazz encompasses both traditional and forward-looking approaches: intimate acoustic combos, orchestral and filmic jazz, and hybrid forms that intersect with nu jazz, electro-swing, and contemporary European improvisation.

Vocal jazz is a jazz tradition in which the human voice is treated as an instrument—matching the phrasing, articulation, and timbral nuance of horns or piano. Singers often improvise melodically and rhythmically, including using scat singing (nonsense syllables) to emulate instrumental solos. At the same time, many vocal‑jazz performances favor traditional, pop‑leaning song structures and clear lyric delivery, reducing the overall role of extended improvisation compared with small‑group instrumental jazz. Repertoires frequently draw from Tin Pan Alley and Broadway standards (the Great American Songbook), rendered with swing, ballad, or Latin feels.