Ambient, post-fusion jazz, minimalism, field recording, electronic extravaganzas and musique concrete manifestos — all could be sold as New Age with the right kind of window dressing and perhaps a little bit of sweetening. California Sigh, Underwood’s self-released 1988 cassette now issued on LP for the first time by Drag City, dips slightly into field recording and electronic spheres, but otherwise sticks to another major venerable New Age pathway: solo acoustic guitar.