Break-up of the Beatles Lennon was in a fragile state of mind after returning from the band's sojourn in India in early 1968 and was disillusioned and resentful that their Transcendental Meditation guru, Maharishi Mahesh Yogi, had not fulfilled Lennon's expectations. Lennon became discontented over his personal identity and his artistic role within the Beatles and entered another period of drug use, which coincided with a deterioration in his marriage and family life. He began to develop an intense interest in the work of Yoko Ono, a Japanese-American conceptual artist whom he had first met at one of her exhibitions in 1966. The pair
The Beatles flash drives. Owing to a long-running royalty disagreement, the Beatles were among the last major artists to sign deals with online music services. Residual disagreement emanating from Apple Corps' dispute with Apple, Inc., iTunes' owners, over the use of the name "Apple" was also partly responsible for the delay, although in 2008, McCartney stated that the main obstacle to making the Beatles' catalogue available online was that EMI "want[s] something we're not prepared to give them". In 2010, the official canon of thirteen Beatles studio albums, "Past Masters", and the "Red: and "Blue" greatest-hits albums were made available on iTunes.