Another constitutional challenge to the CTEA, and to a 1994 law called the URAA, has been filed in the federal district court for the District of Colorado. It is called Golan v. Ashcroft. The plaintiffs in this new case include orchestra conductors whose performance plans were disrupted by one or both of the new laws.
The complaint in Golan v. Ashcroft can be found here (PDF)
A newspaper article about the new case can be found here. The newspaper article, however, fails to note the distinction between the CTEA (which added 20 years to all extant copyrights) and the URAA (which took some foreign works out of the U.S. public domain and placed them back in copyright, thereby creating a class of "undead copyrights"). It is this latter law, not the Bono act itself, that took Peter and the Wolf out of the public domain. The Bono Act, of course, means that Peter and the Wolf will now be too expensive for many orchestras to perform for 20 years longer than would have been the case under the URAA alone.