**300 copies** Astral Colonels are Anthony Pateras and Valerio Tricoli and this is their second album. On Side A ("The Difference of Similarity") the formidable use of a sound arsenal based primarly on prepared piano and tapes and a bright use of echo and repetition create winding tensions grafted into harmonics, irregular spiral-shaped non-progressions intertwining costantly on the ridge between the familiar and the unknown, a recurring alternation of stasis and fibrillation that delivers listeners to a thrilling, eventful audio experience.Side B ("The Similarity of Difference") is more focused on the piano that here sounds just like an elegantly lame carillon able to take us in a charming journey dappled by only apparently discreet electroacustic whiz and burst.