No Voices is the all instrumental rock project from the Mexican trio known as O.P.A. The band is led by guitarist Oscar Garcia (Arizpe), whose initials form the band's identity, and is rounded out by bassist Angel Virgen and drummer Paco Alvarado. Co-producer and engineer Axel Ruiz doubles as a guest musician, providing keyboards on a number of tracks. The group lays out a number of interesting grooves, as heard on tracks such as "Wake Up Franz", "Walking Boys", "Las Tres Fuerzas" and the powerful opening track "Horizontes". Check out the sound coming out of Monterrey, O.P.A., on their disc No Voices. Instrumental Guitar (Electric (Heavy)/Rock/Hard Rock), total running time, 0:00