Born in Pativilca, Peru, 100 miles north of Lima, Alex Acuña was born into a musical family that inspired him and helped shape him as a musician. His father and five brothers were all musicians. Alex taught himself how to play the drums from the age of four. By the time Alex turned ten, he was already playing in local bands. As a teenager, he moved to Lima and became one of Peru's most accomplished session drummers, performing on many recording projects for artists, as well as film and television productions.
In Lima, Alex also earned a glowing reputation for his live performances. So much so, that at the age of eighteen, Alex was chosen by the great Latin band leader, Perez Prado, to join his big band. It was with the Prado band that Alex first traveled to the United States. In 1966, Alex moved to Puerto Rico to work as a studio musician and play locally. During this period, he also studied for three years at the Puerto Rico Conservatory of Music, playing as a classical percussionist with the Symphony Orchestra under the direction of the famed Spanish cellist master Pablo Casals.