Their Satanic Majesties Request is not only The Rolling Stones best album, but it's one of the most underrated rock albums.  Some people might see it as a reaction to The Beatles "Sgt. Pepper's Lonely Hearts Club Band" and others will look at it as if the band was trying to jump on the Psychedelic bandwagon.  Never mind them and give this disc a spin.  The songs are very complex and filled with African drum beats, Middle Eastern sounds, strings, haunting soundscapes, samples, mellotrons and layers of sound.  The album is themed with songs about whimsical fantasy lands, dreams, space travel, bad trips and flower power.  You'll never hear the Rolling Stones take a chance in the studio like this again. If only they would have experimented more instead of the some old blues songs.

To fully enjoy this album you have to wear headphones to experience the psychedelic sounds.  Listening to it on a stereo will lose most of it's intended impact and you wont be able to hear John Lennon and Paul McCartney's vocals.  I also liked how the sound bounces around from left to right channels.  I have to highly recommend any music fans to check this album out.  It's really worth it despite the high sticker price.  If you wanted proof that The Rolling Stones could make records as good as or even better than The Beatles then look no further than Their Satanic Majesties Request.   The concept of the album is that it's a musical passport (hence the title is a play on a British Passport) to different realms of universe.
I really didn't care for The Rolling Stones until I heard this album and now I have a whole new outlook on them (even though I still think they're a singles band).

Highly recommended.