"Un Poco Loco" is an Afro-Cuban jazz standard composed by American jazz pianist Bud Powell. It was first recorded for Blue Note Records by Powell, Curly Russell, and Max Roach on May 1, 1951.
Musical characteristics
"Un Poco Loco" is in thirty-two bar form. It uses the lydian chords and even uses lydian chords stacked on top of each implying a polytonality (D major 7 over C major 7: CEGBDF#AC#) with the improvisation based on an alternating lydian-ish polytonality and an altered dominant chord.
Legacy
In the late 1980s, the renowned literary and cultural critic Harold Bloom included "Un Poco Loco" in his list of the most "sublime" works of twentieth-century American art (from his introduction to Modern Critical Interpretations: Thomas Pynchon's Gravity's Rainbow).