Problem: Yusuf Islam (born Steven Demetre Georgiou; 21 July 1948), commonly known by his former stage name Cat Stevens, is a British singer-songwriter and multi-instrumentalist. His 1967 debut album reached the top 10 in the UK, and the album's title song "Matthew and Son" charted at number 2 on the UK Singles Chart. Stevens' albums Tea for the Tillerman (1970) and Teaser and the Firecat (1971) were both certified triple platinum in the US by the RIAA. His musical style consists of folk, pop, rock, and Islamic music.

Steven Georgiou, born on 21 July 1948 in the Marylebone area of London, was the youngest child of a Greek Cypriot father, Stavros Georgiou (1900-1978), and a Swedish mother, Ingrid Wickman. He had an older sister, Anita (b. 1937), and a brother, David Gordon. The family lived above the Moulin Rouge, a restaurant that his parents operated on the north end of Shaftesbury Avenue which was a short walk from Piccadilly Circus in the Soho theatre district of London. All family members worked in the restaurant. His parents divorced when he was about eight years old, but they continued to maintain the family restaurant and live above it. Although his father was Greek Orthodox and his mother was a Baptist, Georgiou was sent to St Joseph Roman Catholic Primary School, Macklin Street, which was closer to his father's business on Drury Lane. Georgiou developed an interest in piano at a fairly young age, eventually using the family baby grand piano to work out the chords, since no one else there played well enough to teach him. Inspired by the popularity of the Beatles, at 15 he extended his interest to the guitar, persuaded his father to pay PS8 for his first instrument, and began playing it and writing songs. He would escape at times from his family responsibilities to the rooftop above their home, and listen to the tunes of the musicals drifting from just around the corner from Denmark Street, which was then the centre of the British music industry. Stevens emphasised that the advent of West Side Story in particular affected him, giving him a "different view of life". With interests in both art and music, he and his mother moved to Gavle, Sweden, where he attended primary school (Solangsskolan) and started developing his drawing skills after being influenced by his uncle Hugo Wickman, a painter. They subsequently returned to England. He attended other local West End schools, where he says he was constantly in trouble, and did poorly in everything but art. He was called "the artist boy" and mentions that "I was beat up, but I was noticed". He went on to take a one-year course of study at Hammersmith School of Art, as he considered a career as a cartoonist. Though he enjoyed art (his later record albums would feature his original artwork on his album covers), he wanted to establish a musical career and began to perform originally under the stage name "Steve Adams" in 1965 while at Hammersmith. At that point, his goal was to become a songwriter. As well as the Beatles, other musicians who influenced him were the Kinks, Bob Dylan, Nina Simone, blues artists Lead Belly and Muddy Waters, Biff Rose (particularly Rose's first album), Leo Kottke, and Paul Simon. He also wanted to emulate composers who wrote musicals, like Ira Gershwin and Leonard Bernstein. In 1965 he signed a publishing deal with Ardmore & Beechwood and recorded several demos, including "The First Cut Is the Deepest".

what intrument did he learn

Answer with quotes: piano

Question:
Mystique (Raven Darkholme) is a fictional character appearing in American comic books published by Marvel Comics, commonly in association with the X-Men. Created by artist David Cockrum and writer Chris Claremont, she first appeared in the comic book Ms. Marvel #16, published in 1978. Mystique is a member of a subspecies of humanity known as mutants, who are born with superhuman abilities. Mystique is a shapeshifter who can mimic the appearance and voice of any person with exquisite precision, and her natural appearance includes blue skin and yellow eyes.
Mystique becomes the adoptive mother of the four-year-old girl Rogue. Rogue had run away from her home in rural Caldecott County, Mississippi. The girl was living alone in a wooded area, brandishing a shotgun and trusting no one, when Mystique found her. Destiny foresees that Rogue will be important to them and Mystique seeks her out, gains her trust, and takes her in. She and Destiny raise the girl, and Mystique grows to be very protective of her. Mystique, as Raven Darkholme, rises rapidly through the United States Civil Service to the trusted position of Deputy Director of the Defense Advanced Research Projects Agency (DARPA) in the United States Department of Defense. This position gives her access to military secrets and advanced weaponry, both of which she uses for her own criminal and subversive purposes. In this position, she attempts the theft of the Centurion weaponry from S.H.I.E.L.D. She also beat Ms. Marvel's lover Michael Barnett to death, and sought to kill Ms. Marvel. To help her in her criminal activities, Mystique organizes her own incarnation of the Brotherhood of Evil Mutants, consisting of herself, Avalanche, the Blob, Destiny, and Pyro. The Brotherhood attempts to assassinate Senator Robert Kelly, a notoriously anti-mutant politician. The X-Men thwart the assassination attempt, and all of the Brotherhood save Mystique herself are incarcerated. Rogue is trained by Mystique and eventually joins the Brotherhood of Evil Mutants. Her mutant power is the ability to absorb the memories, personality, and skills or powers of whomever she touches. To free the other members of the Brotherhood, Mystique concocts a plan involving Rogue absorbing the powers of Ms. Marvel and the Avengers. Though the plan is successful, the Avengers ultimately defeat the Brotherhood of Evil Mutants, capturing all of them except Rogue and Mystique. Moreover, Rogue finds that she has absorbed Ms. Marvel's memories, personality, and powers permanently. In a further humiliation, a confrontation at the Pentagon ends with Mystique being defeated and turned over to the authorities by a powerless Ms. Marvel. The Brotherhood of Evil Mutants eventually escape, and battle against Dazzler. In an act of revenge against Mystique, Mastermind unbalances Rogue's psyche with the one she absorbed from Ms. Marvel, which prompts her to defect to the X-Men. Because Rogue left without a word, Mystique assumes that Professor X, the X-Men's mentor, brainwashed her. The Brotherhood of Evil Mutants accordingly launches an attempt to kill Professor X. Rogue stops Mystique, and explains that she joined the X-Men because Professor X, as the world's most powerful telepath, is her best hope of healing for her fragmented psyche. Mystique reluctantly relinquishes her guardianship of Rogue.
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Anything else of importance or unique in any way?

Answer:
The Brotherhood attempts to assassinate Senator Robert Kelly, a notoriously anti-mutant politician.