Just giving you Musicianfag input on the Magic Sword song Q posted. The chord progression used is the "Secret Santana" chord progression. Try singing these songs to the chord progression as they use the exact same chord progression:
Babe, I'm Gonna Leave You - Led Zeppelin
Basketball Jones - Cheech & Chong
Earth, Sky, & C - I Mother Earth (I had to include this one, even though I'm sure most have never heard of them.)