Did Theodor W Adorno ever own any Beatles songs?

Answer 1

No.

Northern Songs was a company founded in 1963, by music publisher Dick James, Brian Epstein, John Lennon and Paul McCartney, to publish songs written by Lennon and McCartney (see Lennon-McCartney), as well as songs written by George Harrison and Ringo Starr, who were all members of The Beatles. Their producer, George Martin, was offered a stake in the company but turned it down, as he believed that his position at EMI made it a potential conflict of interest. In 1965, it was decided to make Northern Songs a public company, to save on capital gains tax.

After Epstein died in 1967, Lennon and McCartney sought to renegotiate their publishing deal with James, but early in 1969 James and his partner sold their shares in Northern Songs to Britain's Associated Television (ATV), giving no warning to the four Beatles and their record company, Apple Corps. Lennon and McCartney attempted to gain ownership of the publishing rights, but their bid to gain control failed, as the financial power of Lew Grade ensured that Northern Songs passed into the control of ATV. Allen Klein (then de facto Beatles' manager) attempted to set up a deal for Apple Corps to buy out ATV, but this also failed.

McCartney once informed Michael Jackson about the financial value of music publishing, as Jackson had enquired about the process of acquiring songs and how songs were used. According to McCartney, Jackson then said, "I'm going to get yours [Beatles' songs]".[2] Northern Songs was later purchased by Jackson, although McCartney and Lennon's widow, Yoko Ono, were notified of the sale, but did not bid themselves. Jackson later merged his published catalogue with Sony Corporation of America's to form Sony/ATV Music Publishing. Northern Songs was dissolved in 1995.