"Say Goodbye" is an original composition by pianist Brad Mehldau, first recorded for his 1995 debut album Introducing Brad Mehldau on Warner Records. Cast in a 32-bar form, the piece is one of several introspective originals on the album that established Mehldau's voice as a composer alongside his interpretations of jazz standards. The melody is lyrical and emotionally direct, supported by harmonies that incorporate the chromatic elements characteristic of Mehldau's early writing. Notably, the tune features chromatic passing tones over cadential II-V-I progressions that add harmonic tension and a sense of bittersweet resolution suited to the farewell implied by the title. The 32-bar structure provides a familiar framework for improvisation while allowing the composition's melodic narrative to develop with clarity and cohesion. Mehldau recorded the piece with Christian McBride on bass and Brian Blade on drums, a rhythm section pairing that appears on several tracks from the album's second recording session. Within Mehldau's catalog, "Say Goodbye" sits alongside other debut-era originals like "Angst," "Young Werther," and "London Blues" as part of the body of work that introduced his blending of jazz improvisation with Romantic-era emotional sensibilities and classical structural awareness. The composition has not entered the broader jazz standard repertoire and remains primarily associated with Mehldau's own performances, with no widely known cover versions by other artists.