I’m Marcos Piñeiro, a Puerto Rican guitarist, multi-instrumentalist, and game-audio composer working at the intersection of modern metal, cinematic scoring, and interactive sound design. I’m currently Berklee-trained and have composed and designed the full music and sound-effects for multiple released indie games as the lead audio creator for Laica Studios. My work is driven by a belief that music is not just something you hear — it’s something you enter. Whether I’m writing a crushing metal riff, a fragile piano theme, or a reactive in-game soundscape, my goal is always the same: to make sound feel alive, emotional, and part of a larger world. I perform and produce across guitar, bass, drums, and synthesizers, which allows me to build entire scores from the ground up. Because I handle both composition and sound design, I can shape not only the music but the texture, impact, and physicality of every sound a player hears — from a subtle ambient layer to a cinematic boss theme. Alongside composing, I also design and build my own instruments. Working as a custom luthier and tone architect gives me a deeper connection to sound at its source — how wood, electronics, and strings become emotion. This hands-on approach informs everything I write, from the feel of a distorted riff to the detail of a delicate cue. All of this comes together in Xenox Cosmos, my original creative universe. It’s a space where heavy music, interactive worlds, and storytelling merge — a place for experiments in sound, narrative, and identity. Whether I’m scoring a game, recording an album, or building a new instrument, Xenox Cosmos is the thread that ties it all together. I’m always interested in projects that value atmosphere, emotion, and bold sonic identity — especially in games, film, and interactive media.
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