i can't see the artist photo on music app, the only thing that i did was delete all my music because my ipod can't sync and before that i can saw the photo but after deleted and sync again all artist with photo appears like this, somebody knows how to fix this!
Were these purchased directly from the iTunes store? In which case redownloading will likely fix the issue.
If you added them from the iTunes app for mac/windows, you could try fetching album art in the context menu.