The album that started it all: "Led Zeppelin". 10 million copies later, and it is still relevant today. Even from the beginning, their trademark howl (or sometimes referred to as a "yell") is laced throughout the music as the focal point. Tracks like "You Shook Me" have a bluesy vibe, and include a guitar jam session worthy of study.
Release date: January 12, 1969
Similar artist(s): Black Sabbath, Robert Plant
Top tracks: You Shook Me, Dazed and Confused