1:
Sgt. Pepper's Lonely Hearts Club Band
The first concept album I ever heard, and incidentally the first Beatles album. In fact,
Sgt. Pepper's was the first album I ever listened to and some of the first music I ever listened to. Before it, I was closed to music; now I can't get enough of it.
2:
(What's the Story) Morning Glory?
Morning Glory introduced me to Britpop and '90s music in general and became my starting point into launching from classic rock into gradually harder and newer stuff. The huge classic rock influences and Britpop revolutions of Oasis opened my mind to the fact that yes, there has been good music since the '80s dawned upon the world.
3:
Highway to Hell
This album introduced me to hard rock and got me interested in more modern and harder forms of rock and metal. Well, this album and
Black Sabbath, but mostly this. The pure and unalderated awesomeness of AC/DC is difficult to describe or relate.
4:
Dark Side of the Moon
Anyone who doesn't think
DSotM isn't the greatest psychedelic rock album ever is clearly kidding themselves. This album introduced me to psychedelia and some of the more "far out" aspects of classic rock. "Time" is one of the greatest songs ever written. Ever.
5:
Abbey Road
To me,
Abbey Road was the musical end of the '60s. I'm sure some great albums crammed into 1969 after it, but
Abbey Road brought closure to the greatest decade of music the world had yet seen, and a fitting end it was. John Lennon's contributions explore further into the world of real rock-and-roll than any other Beatles record, Paul's songs form the greatest medley ever (the second being Pink Floyd's
The Wall), and "Here Comes the Sun" is one of the best songs ever written.