Never, ever, ever put one table view inside another. Gack. That's a user interface disaster in the making.
You could use a sectioned table view, where the sections are albums, and the rows within a section are the songs.
For iPad, you could have side-by-side table views, but that doesn't work on iPhone.
Apple intends you to use a split view controller for that on iPad, and a sequence of master>detail>sub_detail view controllers on iPhone. You can go down as many levels as needed.