Credit info for music bought from Itunes Store

When I buy music from the Itunes Store, it doesn’t come with complete credit information (in particular, composer and year of copyright – it puts in the year that the album was released, not the original release date for each track).

The Ascap and BMI sites don’t always have them either. Is there any reliable place I can go to get information that would routinely have been included with the compact disc?

Bump for Monday …