Fred probably has the right answer to your problem. You need to understand what a 'gig disc' is .....a collection of styles that have been selected and /or tweaked for a particular song and stored under the name of that song. The tweak might be as little as setting the correct tempo, or even no changes at all, or it can be major edits to the style main sections, OTS and intro/endings, or even an original style. Just whatever that original player deemed worked well for the song. It is a way for making it easy to find the style for that song that the original player liked to use. Be aware that they are seldom accurate 'covers' of the original recording arrangement of that song, just a style that works ok.
Mike