stone catalog. we bought some rock classics-- "people get ready" by curtis mayfield, dion and the belmonts' "runaroundreat balls of fire," "shake, rattle, and roll." but then, one day, i got the call that the beatles catalog was for sale. it was called a.t.v. music, and it was as if we had hit the mother lode. >> logan: and you paid? >> branca: the price was $47.5 million, and we later merged it with sony's music publishing company to create one of the biggest publishers in the world, sony/a.t.v. music, that the estate, to this day, owns 50% of. >> logan: and so, how much is that worth today? >> branca: i... i wouldn't want to speculate about what it's worth, but it... >> logan: come on, john. ( laughs ) you didn't... >> branca: it's... >> logan: you didn't make all this money in this town without knowing what your investments are worth. ( laughs ) >> branca: well, it would be speculation at this point. >> logan: it's estimated to be worth, like, a billion dollars. >> branca: michael's half? >> logan: yes. >> branca: well, you know, you never really know what something's worth until you go to sell it,