A touch of Sun Dial, flashes of Black Sabbath riffs, early Guru Guru, Hawkwind, Flower Travellin' Band even, in a largely instrumental guitar fronted concoction. Seem to be a Spanish supersession quartet made up of musician from 3 bands I've never heard of! Mater Dronic turn out to be a curious experimental prog underground outfit, although not really to my taste. The other two bands are metal. So "Acid Sessions" is an unlikely and surprising one!Marco Serrato Gallardo (Orthodox): bassDavid (Viaje A 800): drumsBorja Diaz Vera (Orthodox): drumsJosé Carlos Sisto (Mater Dronic): guitar