The Beatles kept their end of the bargain; none of them ever produced any computers.
But Apple ended up wandering into the music business.
It got sued again in 1991, when the Mac incorporated the ability to play musical files,
then again in 2003, when the iTunes Store was launched.
The legal issues were finally resolved in 2007,
when Apple made a deal to pay Apple Corps $500 million for all worldwide rights to the name,
and then licensed back to the Beatles the right to use Apple Corps for their record and business holdings.
Alas, this did not resolve the issue of getting the Beatles onto iTunes.
For that to happen, the Beatles and EMI Music, which held the rights to most of their songs,
had to negotiate their own differences over how to handle the digital rights.
"The Beatles all want to be on iTunes," Jobs later recalled, "but they and EMI are like an old married couple.
They hate each other but can't get divorced.
The fact that my favorite band was the last holdout from iTunes was something I very much hoped I would live to resolve."
As it turned out, he would.