"Inner Urge" is a jazz composition by tenor saxophonist Joe Henderson, written in 1964 and first recorded on November 30 of that year at Van Gelder Studio in Englewood Cliffs, New Jersey, for Blue Note Records. Henderson described the piece to critic Nat Hentoff as an expression of the anger and frustration of "trying to find your way in the maze of New York" and adjusting to the relentless pace required simply to survive in the city. The composition is built on a complex harmonic architecture that departs from conventional jazz forms. Its most distinctive feature is Henderson's use of the Lydian scale and the major seventh flat-five chord throughout the first section, a sound that had roots in bebop vocabulary but was rarely exploited as melodic material until the 1960s. The second half shifts to pure major harmony, creating a characteristic tension between the two sections. Notably, the piece avoids conventional cadences entirely, with the harmony flowing continuously without resolution and ending on a G major chord that never establishes itself as a tonal center. This suspended, open-ended quality distinguishes it from more traditionally resolved standards. Henderson also employs pentatonic scale concepts within the harmonic framework, a technique shared by contemporaries like Wayne Shorter and McCoy Tyner, allowing soloists to play against the stated changes in layered ways. The composition has become a jazz standard and pedagogical touchstone, often compared to Coltrane's "Giant Steps" as essential repertoire for serious jazz students. It has been interpreted by artists including Chick Corea and arranged for large ensembles by Ted Nash for the Jazz at Lincoln Center Orchestra.