Problem: Kaikhosru Shapurji Sorabji (born Leon Dudley Sorabji; 14 August 1892 - 15 October 1988) was an English composer, music critic, pianist and writer. He was one of the 20th century's most prolific piano composers. As a composer and pianist, Sorabji was largely self-taught, and he distanced himself from the main currents of contemporary musical life early in his career. He developed a highly idiosyncratic musical language, with roots in composers as diverse as Busoni, Debussy and Szymanowski, and he dismissed large portions of the established and contemporary repertoire.

Kaikhosru Shapurji Sorabji was born Leon Dudley Sorabji in Chingford, Essex (now Greater London), on 14 August 1892. His father, Shapurji Sorabji, was a civil engineer of Parsi parentage from Bombay, India, born on 18 August 1863. His mother, Madeleine Marguerite Mathilde Sorabji (nee Madeline Matilda Worthy; 13 August 1866 - 5 May 1959), was English. She is said to have been a singer, pianist and organist, but no evidence has been found to support these claims. They married on 18 February 1892. Shapurji Sorabji had married in India in 1880 but, as no record of his first wife's death or his divorce from her has yet been traced, it is possible that he married the composer's mother bigamously.  Very little is known of Sorabji's biography, particularly his early life and musical beginnings. He studied music with Charles Arthur Trew from the early 1910s until around 1915, during a private education that is thought to have ended at about the same time. He reportedly started to learn the piano from his mother at an early age, and he later received help (but no lessons) from his mother's friend Emily Edroff-Smith.  The first significant insight into Sorabji's life comes from his correspondence with Peter Warlock, which began in 1913. At least partly as a result of Warlock's influence, Sorabji began to focus on composition and music criticism. In those letters he showed great interest in interacting with the world of musicians--an attitude that changed dramatically in later years. The first significant instance of such interaction took place in November 1919. Sorabji had sent several of his scores, including that of his First Piano Sonata, to Ernest Newman, who paid them no attention. Sorabji then played the piece to Ferruccio Busoni, who expressed some reservations about the work, but gave him a letter of recommendation, which helped Sorabji get it published.  Already as a teenager, Sorabji took great interest in recent developments in art music--in the work of Schoenberg, Scriabin, Mahler and Debussy, among others--at a time when they received scant attention in the United Kingdom. This interest, along with his ethnicity, cemented his reputation as an outsider. He and his music had their detractors, but some musicians received his work positively: Frederick Delius, who heard a 1930 radio broadcast of Sorabji playing his own piece Le jardin parfume: Poem for Piano Solo, sent a letter of admiration to Sorabji; the French-Swiss pianist Alfred Cortot expressed interest in performing Sorabji's piano concertos; and Alban Berg reportedly took an interest in Sorabji's music.  Although Sorabji performed some of his works in the UK and abroad in the 1920s, the most important period of his pianistic career was a result of his friendship with the Scottish composer Erik Chisholm. Their first meeting took place when Sorabji went to Glasgow to premiere his Piano Sonata No. 4 on 1 April 1930 for Chisholm's Active Society for the Propagation of Contemporary Music. In the Society's concerts Sorabji played some of the longest works he had written to date: in addition to the Fourth Piano Sonata, he premiered Opus clavicembalisticum and Piano Toccata No. 2 and gave a performance of his Nocturne, "Jami". The two remained friends until Chisholm's death in 1965, although their correspondence became less frequent after Chisholm moved to South Africa.

What year was he born?

Answer with quotes: 1892.

Question:
Steven Siro Vai (; born June 6, 1960) is an American guitarist, composer, singer, songwriter, and producer. He was voted the "10th Greatest Guitarist" by Guitar World magazine, and has sold over 15 million records. A three-time Grammy Award winner and fifteen-time nominee, Vai started his music career in 1978 at the age of 18 as a transcriptionist for Frank Zappa, and joined his band from 1980 to 1983. He embarked on a solo career in 1983 and has released eight solo albums to date.
Steve Vai, a descendant of Italian immigrants, was born in Carle Place, New York on June 6, 1960. He is the fourth son of John and Theresa Vai. He described his first experiences with music as, "at the age of five I walked up to [a] piano, hit a note, and noticed that to the right the notes go higher and to the left the notes go lower. In that very moment, I had a full-on epiphany. I was flooded with the instinctual realization of how music was created and how it worked from a theoretical standpoint--the whole language of music was very obvious. I also understood immediately, instinctually, and unequivocally something that has only deepened through the years that the creation of music is an infinite personal expression. I realized that I could do this, I could make music, and it could be whatever I want."  It was a year later, at the age of six, that Vai experienced his first introduction to the guitar, remembering that, "I saw this nine-year-old boy playing the guitar in my grade school auditorium, and that was another epiphany that I had. It was my first recognition of the instrument. When I saw that guitar and I saw this kid playing it, I knew instinctually that I was going to play the guitar someday, and that it would be my instrument. Don't ask me how I knew, I just knew. It was the coolest thing I had ever seen."  As a young child, Vai was influenced by the music his parents had listened to. One album in particular that he cites as his "musical awakening" was the original motion picture soundtrack to the 1961 film West Side Story. At age eleven, Vai was introduced to the contemporary rock and progressive music of the era, and after hearing the guitar solo to Led Zeppelin's "Heartbreaker" at age twelve, decided to begin playing the guitar.  In 1973, Vai began to take guitar lessons from fellow New York native Joe Satriani, and played in local bands (The Ohio Express, Circus, and Rayge) throughout his high school years. Vai cites artists such as Jimmy Page, Brian May, Ritchie Blackmore, Jeff Beck, Jimi Hendrix, as well as jazz fusion guitarists Allan Holdsworth and Al Di Meola as some of his major influences in that time period. In 1978, to further pursue his interest in music composition and theory, Vai attended Berklee College of Music in Boston, Massachusetts. While at Berklee, Vai began working for Frank Zappa as a transcriptionist, and in the middle of his fourth semester, moved to California to start his career as a session and touring artist for Zappa. Also while at Berklee, Vai met his future spouse Pia Maiocco, with whom he has been together since; they have two children. In 2000, Vai was awarded an Honorary Doctorate of Music from Berklee.
Answer this question using a quote from the text above:

Was he an only child?

Answer:
He is the fourth son of John and Theresa Vai.