True, but no additional rights to distribute replicas of the copyrighted music and composer works.

Note, if a band does a cover of a popular song, the original music composer rights also don't magically transfer because someone sang a slightly different version.

Sony may not be technically breaking any rules, if they disclosed the terms of the copyright are revocable... and not perpetual in the terms of sale.

Still a douche move to rip off kids, and burned a lot goodwill with consumers. =3