As many people have already said, this album is particularly difficult to review, as it is simply one unbroken, hour long track of instrumental epicness, however here goes. This album was released in 1990, after what I think is easily Oldfield's worst album, the bland and mediocre pop effort, Earth Moving. So this album was a definite return to form for the classical/ prog master. This not an album which you immediately love from the first listen, there are some very strange melodies used here, as well as some questionable sound effects, the most well known one being the (in)famous Thatcher impression at the end of the album, this is definitely not easy listening music. However, if you take the time to absorb all the melodies and really pay attention, this album is an absolute joy to listen to. Some of the sections are just beautiful, some are mysterious and some are almost funny. The best thing about the album in my opinion, is that because there are so many different styles and ideas playing, it's hard to get bored listening to it. You also discover more about the music. I have listened to it many times, and I still don't fully understand it. However in my opinion, Amarok is definitely Mike Oldfield's best album. If you are just introducing yourself to the progressive rock genre, then this probably isn't a good album to start with due to its sheer length and complexity. However if you enjoy the genre, and are looking for a completely unique album, then buy this, for its complete beauty and innovation.