Question: Dance Panels is a ballet composed by a composer of what nationality?

Context paragraphs:
The Creatures of Prometheus: The Creatures of Prometheus (German: "Die Geschöpfe des Prometheus" ), Op. 43, is a ballet composed in 1801 by Ludwig van Beethoven following the libretto of Salvatore Viganò.  The ballet premiered on 28 March 1801 at the Burgtheater in Vienna and was given 28 performances.  It is the only full length ballet by Beethoven.

Kikijan: Kikijan (Azerbaijani: "Kikican" ) – is an Azerbaijani folk dance.  The Azerbaijani composer Afrasiyab Badalbeyli used the melody of the dance in “The Maiden Tower” ballet composed by him.

Orpheus (ballet): Orpheus is a thirty-minute ballet composed by Igor Stravinsky in collaboration with choreographer George Balanchine in Hollywood, California in 1947.  The work was commissioned by the Ballet Society, which Balanchine founded together with Lincoln Kirstein and of which he was ballet master.  Sets and costumes were created by Isamu Noguchi.

Aaron Copland: Aaron Copland ( ; November 14, 1900December 2, 1990) was an American composer, composition teacher, writer, and later a conductor of his own and other American music.  Copland was referred to by his peers and critics as "the Dean of American Composers."  The open, slowly changing harmonies in much of his music are typical of what many people consider to be the sound of American music, evoking the vast American landscape and pioneer spirit.  He is best known for the works he wrote in the 1930s and 1940s in a deliberately accessible style often referred to as "populist" and which the composer labeled his "vernacular" style.  Works in this vein include the ballets "Appalachian Spring", "Billy the Kid" and "Rodeo", his "Fanfare for the Common Man" and Third Symphony.  In addition to his ballets and orchestral works, he produced music in many other genres including chamber music, vocal works, opera and film scores.

Birmingham Royal Ballet: Birmingham Royal Ballet (BRB) is one of the three major ballet companies of the United Kingdom, alongside The Royal Ballet and the English National Ballet.  Founded as the Sadler's Wells Theatre Ballet, the company was established in 1946 as a sister company to the earlier Sadler's Wells company, which moved to the Royal Opera House that same year, subsequently becoming known as The Royal Ballet.  The new company was formed under the direction of John Field and remained at Sadler's Wells for many years, becoming known as the Sadler's Wells Royal Ballet.  It also toured the UK and abroad, before relocating to Birmingham in 1990, as the resident ballet company of the Birmingham Hippodrome.  In 1997, the Birmingham Royal Ballet became independent of the Royal Ballet in London.  As a resident company, Birmingham Royal Ballet has extensive custom-built facilities, including a suite of dance studios, the "Jerwood Centre for the Prevention and Treatment of Dance Injuries" and a studio theatre known as the "Patrick Centre".  In 2002, the need for Birmingham Royal Ballet to have its own school led to a new association with Elmhurst School for Dance, which is now its official ballet school.

Cipollino: Cipollino, or Little Onion, is a fictional character from Gianni Rodari's eponymous "Tale of Cipollino" (Italian: "Il romanzo di Cipollino" ), also known under its 1957 renamed title "Adventures of Cipollino" (Italian: "Le avventure di Cipollino" ), a children's tale about political oppression.  He also appeared before the publication of the book in the children's magazine "Il Pioniere", which Rodari was editor.  Cipollino was popular in the Soviet Union, up to the point of being adapted as a ballet composed by Karen Khachaturian and choreographed by Genrik Alexandrovich Maiorov, originally staged in Taras Shevchenko National Opera and Ballet Theatre of Ukraine in 1974.

The Lady in the Ice: The Lady in the Ice is a 1953 ballet composed by Jean-Michel Damase, choreographed by Roland Petit, and directed by Orson Welles, based on an idea by Welles.  Welles also wrote the libretto and was the ballet's costume and set designer.  Richard Negri was the assistant designer.  It was Welles's only attempt at a ballet.

Špalíček (ballet): Špalíček ("The Chap-Book" or "The Czech Year") is a 1932 three-act ballet composed by Bohuslav Martinů (H. 214).  It premiered in 1933 in Prague with the subtitle "Ballet from folk games, customs, and fairytales - Ballet-revue".

List of Firebird casts: The Firebird is a ballet composed by Igor Stravinsky, in close collaboration with the choreographer Michel Fokine, commissioned by Serge Diaghilev for his Ballets Russes in 1910.  The ballet was premiered by the Ballets Russes in Paris on 25 June 1910, conducted by Gabriel Pierné.

Dance Panels: Dance Panels is a ballet composed by Aaron Copland in 1959 for a planned collaboration with choreographer Jerome Robbins.  After Copland had written the score, Robbins reneged on his commitment and the performance did not take place.  Three years later, Copland revised the score for a ballet by the Bavarian State Opera in Munich, Germany, where it premiered on 3 December 1963.  The ballet was performed by the New York City Ballet in 1965 and the concert version received its first performance at the Ojai Music Festival the following year.  According to Copland biographer Howard Pollack, "Dance Panels" has proven from a musical standpoint one of the composer's more accessible late scores.  While some of its more dissonant moments sound similar to Copland's 12-tone compositions, other parts recall his earlier stage and screen music.  It is also the only one of Copland's six ballets not written to a specific program.

Supporting paragraphs: Dance Panels Aaron Copland
Answer: American