 The end result was liked enough by both the viewers and programme producers to be retained as the permanent theme, and Oldfield additionally recorded a new version of the programme's closing music, which runs for just 20 seconds and has never been commercially released.The released version of the theme is actually a further re-recording, which incorporates many subtle changes compared to the TV version, in addition to eliminating the opening snare drum roll, extending the piece to a more suitable duration for commercial release, and being mixed in stereo.The TV version was mono-only (British television was not broadcasting in stereo at that time) and has never been made available for sale.