I don't know how long the following video will stay online since it seems to be a lift from a BBC documentary on recording The Beatles, but it's a wonder to listen to while you can. The video is just the audio portion of "Something" off the Abbey Road album and it's a great study in how a hit was put together using only an 8 track tape recorder.
First of all, the sounds are wonderful, even though you only hear them through the monitor mix (especially the strings). Second, listen to how all the parts fit so well together. A few of them, like the guitar through the Leslie speaker and piano in the bridge, only play for a short time in a turnaround but they make a huge impact in the arrangement. The vocal double in the chorus is a trick still used today on perhaps the majority of records.
It's a great song that's become a standard, a beautiful arrangement, and great recording that's stood the test of time.