No, not 'perpetual' -- just perpetual less one day. ;-)
If I could Turn Back Time
https://youtu.be/BsKbwR7WXN4
http://firstmonday.org/article/view/1059/979
"Copyright term extension is a very fitting memorial for Sonny. This is not
only because of his experience as a pioneer in the music and television
industries. The most important reason for me was that he was a legislator who
understood the delicate balance of the constitutional interests at stake.
Last year he sponsored the term extension bill, H.R. 1621, in conjunction
with Sen. Hatch. He was active on intellectual property issues because he
truly understood the goals of the Framers of the Constitution: that by
maximizing the incentives for original creation, we help expand the public
store-house of art, films, music, books and now also, software. It is said
that 'it all starts with a song,' and these works have defined our culture to
audiences world-wide.
Actually, Sonny wanted the term of copyright protection to last forever. I am
informed by staff that such a change would violate the Constitution. I invite
all of you to work with me to strengthen our copyright laws in all of the
ways available to us. As you know, there is also Jack Valenti's proposal for
term to last forever less one day. Perhaps the Committee may look at that
next Congress."