Question: What year did the the German composer whose compositions are in The Individualism of Gil Evans die?

Context paragraphs:
The Individualism of Gil Evans: The Individualism of Gil Evans is an album by pianist, conductor, arranger and composer Gil Evans originally released on the Verve label in 1964.  It features Evans' big band arrangements of five original compositions (two cowritten with Miles Davis) and compositions by Kurt Weill, Bob Dorough, John Lewis and Willie Dixon.  Tracks 1, 6, 7, 8 & 9 first appeared on the CD version of the album.

Marco Oppedisano: Marco Oppedisano (born November 20, 1971 in Brooklyn, New York) is an American guitarist and composer whose compositions focus on the innovative use of electric guitar in the genre of electroacoustic music.  His musique concrète/acousmatic music compositions have utilized multitrack recording and extended performance techniques for electric guitar, nylon string guitar and electric bass.  In addition to musique concrète, compositions by Oppedisano also consist of "live" electric guitar in combination with a fixed playback of various electronic, acoustic (specifically female voice courtesy of Kimberly Fiedelman) and sampled sounds.

Mike Lipskin: Mike Lipskin is a stride jazz pianist of the pre-bop jazz style creating his own special mode within the idiom, piano instructor, record producer and author.  He has striven to keep alive the form of jazz piano known as Harlem Stride Piano, performing varied repertoire and originals, has concertized throughout USA and Europe.  He played piano and organ on Papa John Creach's self-titled album, produced Ryo Kawasaki's Juice album, and produced Gil Evans' "Gil Evans Orchestra Plays the Music of Jimi Hendrix".  His 1958 photographs and commentary contributed to the 1995 documentary film "A Great Day in Harlem".  Lipskin performed at the Fats Waller centennial concert at the 22nd San Francisco Jazz Festival.  "Mike Lipskin plays stride with great accuracy - Eubie Blake.  "Mike Lipskin performed Carolina Shout in a tribute to his teacher Willie the Lion Smith with outstanding improvisation" Peter Watrous, NY Times.

Kurt Weill: Kurt Julian Weill (March 2, 1900April 3, 1950) was a German composer, active from the 1920s in his native country, and in his later years in the United States.  He was a leading composer for the stage who was best known for his fruitful collaborations with Bertolt Brecht.  With Brecht, he developed productions such as his best-known work "The Threepenny Opera", which included the ballad "Mack the Knife".  Weill held the ideal of writing music that served a socially useful purpose.  He also wrote several works for the concert hall.  He became a United States citizen on August 27, 1943.

Bryan Kelly: Bryan Kelly (born 1934) is a composer whose compositions include evening canticles in C and A flat for Church of England evensong.  His Magnificat and Nunc dimittis in C incorporate Latin American rhythms. His orchestral works include the "Cuban Suite", the "New Orleans Suite", an overture "Provence", "Divertissement", two Leicestershire Schools Symphony Orchestra commissions - the overture "Sancho Panza" (1969) and "Sinfonia Concertante" (1967) - and the "Caliban and Ariel" suite for double bass.

Gil Evans &amp; Ten: Gil Evans & Ten (also released as "Big Stuff" and "Gil Evans + Ten") is the first album by pianist, conductor, arranger and composer Gil Evans as a leader, released on the Prestige label in 1957.  It features Evans' arrangements of five standards and one original composition performed by Evans, Steve Lacy, John Carisi, Jack Koven, Jimmy Cleveland, Bart Varsalona, Willie Ruff, Lee Konitz, Dave Kurtzer, Paul Chambers, Jo Jones, Louis Mucci and Nick Stabulas.  In 2003 a SACD version was published, with the first release of the original stereo tapes.

New Bottle Old Wine: New Bottle Old Wine is an album by jazz composer, arranger, conductor and pianist Gil Evans recorded in 1958 by Evans with an orchestra.  The album is a suite of songs written by and/or associated with major jazz musicians and composers, in original arrangements by Gil Evans, featuring Cannonball Adderley as the main soloist (like the albums Evans made with Miles Davis including "Miles Ahead", "Porgy and Bess", and "Sketches of Spain").  The orchestra also featured a number of important players including Bill Barber, Frank Rehak, Johnny Coles, Art Blakey, and Paul Chambers.

Mixed (album): Mixed is a compilation album of two avant-garde jazz sessions featuring performances by the Cecil Taylor Unit and the Roswell Rudd Sextet.  The album was released on the Impulse!  label in 1998 and collects three performances by Taylor with Archie Shepp, Jimmy Lyons, Henry Grimes and Sunny Murray with Ted Curson and Roswell Rudd added on one track which were originally released under Gil Evans' name on "Into the Hot" (1961).  The remaining tracks feature Rudd with Giuseppi Logan, Lewis Worrell, Charlie Haden, Beaver Harris and Robin Kenyatta and were originally released as "Everywhere" (1966).  Essentially these are the three Cecil Taylor tracks form the "Gil Evans album" (i.e. Evans was not meaningfully involved but Impulse had printed the album covers) teamed with Roswell Rudd's Impulse album Everywhere, in its entirety.

Blues in Orbit (Gil Evans album): Blues in Orbit is an album by jazz composer, arranger, conductor and pianist Gil Evans, recorded in 1969 and 1971 by Evans with an orchestra featuring Jimmy Cleveland, Howard Johnson, Billy Harper, and Joe Beck.  The album was originally released on the short-lived Ampex label as Gil Evans but received wider release on the Enja label under this title.

Svengali (album): Svengali is a live album by jazz composer, arranger, conductor and pianist Gil Evans, recorded in 1973 by Evans with an orchestra featuring Ted Dunbar, Howard Johnson, David Sanborn, Billy Harper, Richard Williams, Trevor Koehler, and Hannibal Marvin Peterson.  The name of the album is an anagram for Gil Evans.

Supporting paragraphs: The Individualism of Gil Evans Kurt Weill
Answer: 1950