GUITARSEver the sonic experimentalist, Mike Oldfield uses guitars exclusively (strummed, plucked, struck, sampled, etc.) to create every sound on Guitars. Perhaps an intentional response to the composer's previous assortment of electronic recordings, the album suffers from its form over substance concept. The more delicate, acoustic material ("Summit Days," "Muse," "Enigmatism") has the meditative, elegant quality listeners would naturally expect from