Ripping by Index

[lyapounov]

Having teached long time ago database structure, I use to give to my student the very difficult job to make a conceptual model of classical CD.

Your description is a quite easy case. Just imagine a CD which has 3 tracks Mahler number 1 3 tracks Mahler number 2 and three tracks Bruckner number 5.

In that case you would need a 3 level structure:

Mahler
1.1 Symphony 1
1.1.1 movement 1
...
1.2 Symphony 2
1.2.1 movement 1
...
Bruckner
2.1 Symphony
etc...

And then, imagine you want to structure by interpret...

And then, imagine all this is in a Box set...

Just my 2 cents

Cheers