So how do I do the following in iTunes.

I have several tracks by Art Blakey, all on compilations, the tags (CDDB/FreeDB) contain as artist the following:

Art Blakely & The Jazz Messengers
Art Blakey & The Jazz Messengers
Art Blakey & His Messengers
Art Blakey & The Messengers

I want to batch edit the artist and then auto rename the files to reflect the correct artist name.