To tell the truth, music from World of Goo is kinda little chamber symphony. There’s no hint of casual game genre or any other toy like features. The OST almost doesn’t contain electronic music with the exception of a couple of tracks really strongly inspired by Vangelis. Neither the leitmotif nor the common main theme is the thing that runs through the whole soundtrack. It’s more likely to be a special set of music instruments, which Kyle is using: strings, harps, flutes and a choir. This very language he uses to tell the listeners a sad story about a conflict between goo balls and The Corporation.