Complex sentence: Alvaro M. Rocha has worked behind the scenes for so many years on several projects and even released a number of noncomercial works, gaining gaining maturity as a musician, sound designer and audio engineer.
Split into simpler sentences: Alvaro M. Rocha has worked behind the scenes for so many years on several projects and even released a number of noncomercial works. And after gaining maturity as a musician, sound designer and audio engineer.