Question: The Tender Land had music by the composer whose nickname was what?

Context paragraphs:
I, Q (book series): I, Q is a series of young adult fiction mystery books.  The first three are written by Roland Smith and the rest are co-written by Smith and Michael P. Spradlin.  They concern a thirteen-year-old boy named "Quest" – whose nickname is "Q" – and whose parents are well-known rock musicians.  He and his stepsister Angela get involved with the U.S. Secret Service and the Israeli Mossad and are protected by Tyrone Boone and his group SOS (Some Old Spooks).

Alex Ramos: Alex Ramos (born January 17, 1961) is a former middleweight boxer from the 1980s.  A native of Manhattan, New York, whose parents were from Puerto Rico, Ramos won four Golden Gloves titles in New York City in the late 1970s (1977–1980) and was on the USA Boxing team from 1978–80.  Ramos was nicknamed "The Bronx Bomber" after Joe Louis, whose nickname was "The Brown Bomber".

Beisaren: Beisaren is the northernmost point of the island of Hopen in the Svalbard archipelago.  It is named after hunter Berner Jørgensen, whose nickname was "Beisaren".

The Tender Land: (The Tender Land) is an opera with music by Aaron Copland and libretto by Horace Everett, a pseudonym for Erik Johns.  The opera tells of a farm family in the Midwest of the United States.  Copland was inspired to write this opera after viewing the Depression-era photographs of Walker Evans and reading James Agee's "Let Us Now Praise Famous Men".  He wrote the work between 1952 and 1954 for the NBC Television Opera Workshop, with the intention of its being presented on television.  However, the television producers rejected the opera.

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.

Golden Boy Promotions: Golden Boy Promotions, Inc. is a boxing promotional firm started by former boxer 10-time world champion in six weight divisions Oscar De La Hoya (whose nickname is "The Golden Boy").  De La Hoya owns a majority interest in the firm, with Bernard Hopkins being a minority owner.  Previously Winky Wright, Shane Mosley, Marco Antonio Barerra and Ricky Hatton held interest in the company.

Cactus Club: The Cactus Club was a nightclub in the South of First Area (SoFA) of Downtown San Jose, California.  It was one of the first clubs to replace some of the 'red light' businesses on South First Street (across the street was the Pussycat Theater which later became F/X).  The Cactus Club took over The Bachelor Club and went on to become a legendary live music venue in San Jose for close to 15 years.  The concept of The Cactus Club was created by Sean Galvin and Mike Trippett.  It was Producer/Promoter Ric Hines who made the opening of the Cactus Club possible with his business experience and professional network.  Hines recruited a local lawyer as a partner, Bob Cullen, whose nickname "Cactus Bob" was used to name the club.  Mike's brother Calvin Trippett was brought in later as the booking agent for the club.  The Cactus Club opened in 1988 and remained open until 2002.

Kathleen Finneran: Kathleen Finneran (born December 3, 1957 in St. Louis, Missouri), is an American author.  She wrote the book-length family memoir "The Tender Land" (Houghton-Mifflin, 2000).  Finneran received a Whiting Award in 2001 and a Guggenheim Fellowship in 2003.

Solid Muldoon: The Solid Muldoon was a supposedly prehistoric "petrified human body" unearthed in 1877, at a spot now known as Muldoon Hill, near Beulah, Colorado.  The figure enjoyed a brief tour of the United States before it was revealed to be a hoax.  It was said to have been named after wrestler William Muldoon, whose nickname was "The Solid Man".  This nickname was itself a reference to a comic song called "Muldoon, the Solid Man", written by Edward Harrigan.

Espen Knutsen: Kjell Espen Knutsen Jahre (born January 12, 1972) is a retired Norwegian professional ice hockey player and currently the general manager of Vålerenga in the Norwegian GET-ligaen.  He played five seasons in the North American-based National Hockey League (NHL), and is to date the only Norwegian to have played in the NHL All-Star Game.  In his native Norway, Knutsen is also known by the nickname "Shampoo" because his father is a hairdresser, and also a former hockey player whose nickname was "The Soap" (Såpa in Norwegian).

Supporting paragraphs: The Tender Land Aaron Copland
Answer: the Dean of American Composers