Albums Randomly Stop Working

[user-removed]

Why is it that I will save an album and it will be working fine and then out of no where some or all of the songs are no longer available, but then ofter later on they start working again? I have had this happen a few times and several of them I have removed the album from my accoutn because it had stopped working to just find out later onm it is randomly working again. 

God Bless 

Tess Stanhope

[user-removed]

There could be many reasons, licensing renewals, content on the artist page getting updated and fixed, meta tags getting corrected?