Answer the question at the end by quoting:

J. R. Cash was born on February 26, 1932 in Kingsland, Arkansas, to Ray Cash and Carrie Cloveree (nee Rivers). He was the fourth of seven children, who were in birth order: Roy, Margaret Louise, Jack, J. R., Reba, Joanne, and Tommy (who also became a successful country artist). He was primarily of English and Scottish descent. As an adult he traced his surname to 11th-century Fife, after meeting with the then-laird of Falkland, Major Michael Crichton-Stuart.
Cash began performing concerts at prisons starting in the late 1950s. He played his first famous prison concert on January 1, 1958, at San Quentin State Prison. These performances led to a pair of highly successful live albums, Johnny Cash at Folsom Prison (1968) and Johnny Cash at San Quentin (1969). Both live albums reached number 1 on Billboard country album music and the latter crossed over to reach the top of the Billboard pop album chart. In 1969 Cash became an international hit when he eclipsed even the Beatles by selling 6.5 million albums. In comparison, the prison concerts were much more successful than his later live albums such as Strawberry Cake recorded in London and Live at Madison Square Garden, which peaked at #33 and #39 on the album charts respectively. The Folsom Prison record was introduced by a rendition of his "Folsom Prison Blues," while the San Quentin record included the crossover hit single "A Boy Named Sue," a Shel Silverstein-penned novelty song that reached No. 1 on the country charts and No. 2 on the U.S. Top Ten pop charts. The AM versions of the latter contained profanities which were edited out of the aired version. The modern CD versions are unedited thus making them longer than the original vinyl albums, though they retain the audience reaction overdubs of the originals. Cash performed at the Osteraker Prison in Sweden in 1972. The live album Pa Osteraker ("At Osteraker") was released in 1973. "San Quentin" was recorded with Cash replacing "San Quentin" with "Osteraker". In 1976, a further prison concert, this time at Tennessee Prison, was videotaped for TV broadcast and received a belated CD release after Cash's death as A Concert Behind Prison Walls.

When did he start perfoming

starting in the late 1950s.

Answer the question at the end by quoting:

Leonardo di ser Piero da Vinci (Italian: [leo'nardo di ,ser 'pje:ro da (v)'vintSi] ( listen); 15 April 1452 - 2 May 1519), more commonly Leonardo da Vinci or simply Leonardo, was an Italian Renaissance polymath whose areas of interest included invention, painting, sculpting, architecture, science, music, mathematics, engineering, literature, anatomy, geology, astronomy, botany, writing, history, and cartography. He has been variously called the father of palaeontology, ichnology, and architecture, and is widely considered one of the greatest painters of all time. Sometimes credited with the inventions of the parachute, helicopter and tank, he epitomised the Renaissance humanist ideal.
In 1466, at the age of fourteen, Leonardo was apprenticed to the artist Andrea di Cione, known as Verrocchio, whose bottega (workshop) was "one of the finest in Florence". He apprenticed as a garzone (studio boy) to Andrea del Verrocchio, the leading Florentine painter and sculptor of his day (and would do so for 7 years). Other famous painters apprenticed or associated with the workshop include Domenico Ghirlandaio, Perugino, Botticelli, and Lorenzo di Credi. Leonardo would have been exposed to both theoretical training and a vast range of technical skills, including drafting, chemistry, metallurgy, metal working, plaster casting, leather working, mechanics and carpentry as well as the artistic skills of drawing, painting, sculpting and modelling. Much of the painted production of Verrocchio's workshop was done by his employees. According to Vasari, Leonardo collaborated with Verrocchio on his The Baptism of Christ, painting the young angel holding Jesus' robe in a manner that was so far superior to his master's that Verrocchio put down his brush and never painted again, although this is believed to be apocryphal. Close examination reveals areas that have been painted or touched-up over the tempera using the new technique of oil paint; the landscape, the rocks seen through the brown mountain stream and much of the figure of Jesus bearing witness to the hand of Leonardo. Leonardo may have been the model for two works by Verrocchio: the bronze statue of David in the Bargello and the Archangel Raphael in Tobias and the Angel. By 1472, at the age of twenty, Leonardo qualified as a master in the Guild of Saint Luke, the guild of artists and doctors of medicine, but even after his father set him up in his own workshop, his attachment to Verrocchio was such that he continued to collaborate with him. Leonardo's earliest known dated work is a drawing in pen and ink of the Arno valley, drawn on 5 August 1473.

What did he like
young angel holding Jesus' robe in a manner that was so far superior to his master's