12. Fireflies
- Performer: Owl City
- Album: Ocean Eyes
- Year of Release: 2009
While Owl City’s “Fireflies” has five chords, F, C, and G carry you through most of the song, with Em and Am putting in quick appearances along the way. It’s a touch more challenging than some of the songs on this list, but still very easy to play!
Chords Used: G, C, F, Em, Am