Philosophical (as opposed to sentimental):
Iron Maiden-Rime of the Ancient Mariner
Putting Cooleridge’s poem to music. Is this cheating?
Nearly anything by Rush- Xanadu, Trees, Farewill to Kings…Peart’s lyrics were heavily influenced by literature and philosophy, notably Ayn Rand. I wrote a paper my senior year at Creighton (English-Creative Writing specialty) outlining the influence of philosophy on modern rock music. I got an A.