Trinkle Tinkle is a 32-bar AABA composition written by Thelonious Monk, first recorded in December 1952 for the Prestige label. The tune is renowned for its angular, demanding melody built on rapid sixteenth-note runs that challenge even the most accomplished horn players. The harmonic language features parallel and cycling dominant chords, a hallmark of Monk's compositional style that generates persistent harmonic tension through fast-moving changes. A distinctive structural feature is the bridge, which begins on the same chord as the A sections, a unique trait among Monk's AABA forms. Monk himself reportedly observed that this bridge, or the inside of the tune, is what makes the outside sound good, inverting the typical tension-and-release relationship found in standard song form. The rhythmic character is swinging yet intricate, with the written melody posing formidable technical demands regardless of tempo. The best-known early version was recorded in September 1954 for Prestige, and a celebrated later recording with John Coltrane followed in July 1957, released on Jazzland. While the tune has never achieved the widespread popularity of some other Monk compositions, it holds a respected place among his more challenging originals. Abbey Lincoln later added lyrics to the melody and recorded it under the title Monkery's the Blues, a version that earned Monk's personal approval.