He was born on 2 September 1925, in New York City; died in early 1981.
Most will know Montenegro best from his 1968 recording of Ennio Morricone's theme from the classical Sergio Leone spaghetti Western, The Good, the Bad, and the Ugly, featuring whistling by Muzzy Marcellino. It was an international hit.
He rose to recognition through his work as a film and television composer and introduced the use of synthesizers to movie and television soundtracks. In the early 1970s Montenegro became known in some circles as "The Quadfather", due to his pioneering work in quadrasonic recording. He began to do research into psychoacoustics. He had realized the potential of quadrasonic sound, and believed he could use the technique to create a complete circle of sound, motion in every direction, as well as a feeling of spaciousness. Having discovered the tricks and techniques to composing music for quadrasonic sound he produced the first ever four-channel pop album, Love Theme from the Godfather, hence his nickname "The Quadfather."
Jupiter to Saturn to Sun/Mars to Pluto. I'm not sure what such chains indicate, other than some kind of natural coordination in the native. Perhaps in Montenegro's case, an inbuilt sense of rhythm?
If only Uranus (new ideas) and Jupiter (expansion) were a little closer - close enough to be in sextile, there'd be a nice Yod with its apex at Neptune/Mercury (imagination, creativity, communication). Maybe Moon forms a sextile with Jupiter instead though - not as good but it'd still produce a nice Yod. Without time of birth this remains unknown.