Led Zeppelin seemed interested in many different themes, including mythology, s**, and even citrus.
GREEK
1. Achilles Last Stand
NORSE
2. Immigrant Song
3. No Quarter
TOLKIEN
4. Misty Mountain Hop
5. Ramble On
6. The Battle of Evermore
S**
7. You Shook Me
8. Whole Lotta Love
9. Trampled Underfoot
10. Custard Pie
11. Candy Store Rock
CITRUS
12. The Lemon Song
13. Tangerine