user: In this task, you're expected to write answers to questions involving multiple references to the same entity. The answer to the question should be unambiguous and a phrase in the paragraph. Most questions can have only one correct answer.
Q: Passage: Harrison wrote his first song, "Don't Bother Me", while sick in a hotel bed in Bournemouth during August 1963, as "an exercise to see if I could write a song", as he remembered. His songwriting ability improved throughout the Beatles' career, but his material did not earn full respect from Lennon, McCartney and producer George Martin until near the group's break-up. In 1969, McCartney told Lennon: "Until this year, our songs have been better than George's. Now this year his songs are at least as good as ours". Harrison often had difficulty getting the band to record his songs. Most Beatles albums from 1965 onwards contain at least two Harrison compositions; three of his songs appear on Revolver, "the album on which Harrison came of age as a songwriter", according to Inglis.
Harrison wrote the chord progression of "Don't Bother Me" almost exclusively in the Dorian mode, demonstrating an interest in exotic tones that eventually culminated in his embrace of Indian music. The latter proved a strong influence on his songwriting and contributed to his innovation within the Beatles. According to Mikal Gilmore of Rolling Stone, "Harrison's openness to new sounds and textures cleared new paths for his rock and roll compositions. His use of dissonance on ... 'Taxman' and 'I Want to Tell You' was revolutionary in popular music – and perhaps more originally creative than the avant-garde mannerisms that Lennon and McCartney borrowed from the music of Karlheinz Stockhausen, Luciano Berio, Edgard Varèse and Igor Stravinsky ..."Of the 1967 Harrison song "Within You Without You", author Gerry Farrell said that Harrison had created a "new form", calling the composition "a quintessential fusion of pop and Indian music". Lennon called the song one of Harrison's best: "His mind and his music are clear. There is his innate talent, he brought that sound together." In his next fully Indian-styled song, "The Inner Light", Harrison embraced the Karnatak discipline of Indian music, rather than the Hindustani style he had used in "Love You To" and "Within You Without You". Writing in 1997, Farrell commented: "It is a mark of Harrison's sincere involvement with Indian music that, nearly thirty years on, the Beatles' 'Indian' songs remain the most imaginative and successful examples of this type of fusion – for example, 'Blue Jay Way' and 'The Inner Light'."Beatles biographer Bob Spitz described "Something" as a masterpiece, and "an intensely stirring romantic ballad that would challenge 'Yesterday' and 'Michelle' as one of the most recognizable songs they ever produced". Inglis considered Abbey Road a turning point in Harrison's development as a songwriter and musician. He described Harrison's two contributions to the LP, "Here Comes the Sun" and "Something", as "exquisite", declaring them equal to any previous Beatles songs. 
Question: What is the last name of the writer who claimed "Beatles' 'Indian' songs remain the most imaginative and successful examples of this type of fusion"?
A: 

assistant: Farrell.