By chance I listened to Running Free from the original Maiden Japan release today and shortly thereafter the same track but this time from The First Ten Years release. And I couldn't believe it was the same track, but it is, officially! On the original release there's a different introduction by Paul, and the guitars have a pretty raw and slightly out of tune sound. But on The First Ten Years release the intro speech is another one and the guitars are very in tune and has a very fat sound!