Intros, turnarounds & endings — how tunes breathe

Standards are containers: how you get in, link the choruses and get out is arrangement — and it's where a band sounds professional or doesn't. The classic machinery, briefly.

Intros

• The turnaround intro: loop I–VI–ii–V (or its tritone-sub cousin) for four or eight bars. Works for any tune in the key; the singer enters as if stepping onto a moving walkway.
• The vamp: two chords rocking (Imaj7–ii7, or i–♭VII in minor). Modal tunes and ballads love it; So What's bass intro is the most famous in jazz.
• The last-eight intro: play the final 8 bars of the form as the intro — the jazz cousin of the blues "from the five". The audience arrives already knowing how it ends.

Between choruses: trading and sending

The I–VI–ii–V turnaround keeps each chorus handing cleanly to the next. Two conventions worth knowing: trading fours (soloists alternate four-bar phrases with the drummer — the form keeps running underneath, so count!) and the send-off: the band plays composed hits on the first four bars of a chorus, then drops away to launch the soloist.

Key changes without a bump

The standard gear-change is the new key's ii–V: from C to E♭, play Fm7–B♭7 and you've arrived before anyone notices the road turned. Songwriters can lift this whole: want your last chorus up a tone? Insert the ii–V of the new key in the two bars before it. (The famous "truck driver"半-step jump works too — jazz just prefers to earn it.)

Endings

• The tag: repeat the last phrase three times — usually cycling iii–VI–ii–V each pass — and resolve on the third. The universal "we're landing" signal.
• The Basie: the pianist's three-chord "plink-plink-plink" cadence after the band cuts off (♭II9 sliding to I, then the high stab). Even people who've never heard of Basie know it.
• The Ellington: end on a chord a major third below home or on Imaj7♯11 — unresolved, lights-fading.
• The ritard ballad ending: slow the final two bars, fermata the last melody note, resolve V7–I with a flourish. Sinatra records are the textbook.

Part of the Undercover Zest reference library — free songwriting tools and study guides. Try the chord progression builder, sketch toplines in the melody sketcher, or find words with RhymeForge.