The old tapes have been meticulously restored - excellent sound quality. Great music, if you're a Thunderbirds fan. Two points of criticism: firstly, the end tune (track 22) was taken from episode one; all further episodes had a slightly different (shorter) ending, and secondly, the music from the feature films is not included. In my opinion, Barry Gray's masterpiece (at least in his Thunderbirds work) is the theme in the film "Thunderbirds are go" starting after about 7 minutes play. Including this in the CD (in stead of some less brilliant background music from the episodes) would have made it 5 star.