Mysql group by table b, inner join table a for a random?

AFAIR, "ORDER BY RAND()" is extremely slow solutions, especially on tables like you have (2 million+ records), so I'd recommend looking at something similar to these kind of articles first: greggdev.com/web/articles.php?id=6.

Since I'm neither an expert on MySQL nor on PHP, I'll try with pseudocode and generic SQL. I have renamed your tables to albums and tracks for sake of readability.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.