Songs within songs

I was struck by this song's relevance to issues in our class,  Eid ma clack shaw - Bill Callahan.

The song mentions multiple dreams within the frame of the song, One in which the narrator "dreamed it was a dream that you were gone"  implying dreams within dreams or dreams and reality being reflected through each other.  In a second dream, the narrator dreams "the perfect song" which he writes when he awakes.
The "song" that he dreams is the "chorus" of the song itself, so we have a nesting of songs.  The words of the inner song are nonsense, and have a dreamlike quality, like but unlike the words we are used to.  This brings to mind The Jabberwocky poem in Alice, with it's nonce and nonsense unfamiliar yet eerily meaningful and powerfully evocative.  This Tom Waits song, a part of an album of Alice inspired songs, has that same quality.  The idea of songs within songs also brought to mind childhood memories of "This is a song that never ends..." and 99 bottles of beer on the wall, which are nested within themselves, and the infinite regress is part of their humor.  These songs I linked to are inspired by some of the ideas in the Alice stories, but also offer new ways of thinking about the stories, and are a fitting addition to our set of lenses.