This will be similar to the 80s thread, in that there will be days I feature more than one song, especially since there are probably thousands of songs that are worth featuring in this thread. This thread could potentially go on for a long time.
As for what constitutes classic rock, pretty much any rock song from the 70s qualifies, and there are plenty of songs from the mid to late 60s, as well as the early 80s, that apply. Anyway, away we go!
Eagles - Hotel CaliforniaEasily one of the most popular classic rock songs of the 70s, I have heard this song many, many times, yet it still sounds awesome every time I hear it. The lyrics are very cool, it is a very easy to sing along to, it rocks and the guitar solo that closes the song is both epic and iconic. This has become one of those songs many love to call overrated, but when judging the song on merit alone, in other words leaving how much people like it or whatever out of the equation, this is by and large a tremendous song.