Rejecting the seamless cross-stitching and salamander slither of Glass's own ensemble, Alter Ego opt for a brassier and more strident approach. This strategy proposes a subtly alternative view about which the composer obviously approves - Orange Mountain Music in his own label. The seminal Music in Similar Motion and Music in Contrary Motion... are... revitalised, and the rarely heard instrumental works are a delight. Strung Out (1967) for solo violin takes a line for a marathon zigzagging walk and is brilliantly traversed by Francesco Perverini, while the charming Piece in the Shape of a Square (1968) for two flutes moves through stealth-like harmonic fields, with an atmosphere of intense misterioso.