"Song for Luke" is an original composition by Japanese-born trumpeter Jun Iida, written as an elegy for a childhood friend who passed away from brain cancer. The piece transforms personal grief into a poignant ballad characterized by an affecting, unforgettable melody shared between trumpet and voice in intimate unison and interplay. The composition prioritizes economy of expression and lyrical beauty over rhythmic complexity, creating a spacious, elegiac atmosphere that allows the melodic lines to breathe. It first appeared as the ninth track on Iida's debut leader album Evergreen, released on OA2 Records in 2024, recorded in November 2022 at Tritone Recording in Los Angeles. The recording features Aubrey Johnson on wordless vocals alongside the trumpet lead, with Masami Kuroki on guitar, Josh Nelson on piano, Jonathan Richards on bass contributing a notably introspective solo, and Xavier Lecouturier on drums. The track runs approximately seven minutes and forty-two seconds. As one of six Iida originals on Evergreen, the composition exemplifies his strength in crafting forward-leaning melodies that blend contemporary jazz sensibilities with influences drawn from blues and pop. The album reflects Iida's musical development across his years living in Los Angeles, Seattle, and New York. No cover versions or performances by other artists have been documented.