When you place a specimen under a microscope, you begin to see things the naked eye could never perceive. You see its intricate structure and hidden details. Sound works the same way—audio engineers must turn their ears into microscopes, dissecting every subtle layer, nuance, and frequency band of a sound. At the same time, they use specialized tools to visualize those frequencies with precision.

Once they can clearly "see" them, they make decisions—whether to subtract or enhance certain elements, amplify or dissolve specific details. Much like an optical engraver meticulously etching the tiniest components on microchips or electronic circuits. With one key difference: sound is invisible.

Capturing, shaping, and elevating something invisible is no simple task. Yet, the art and industry of sound has quietly—and gloriously—thrived in this way for centuries. A music production contains countless layers and frequencies interwoven together. Balancing all of that into a cohesive whole would be impossible without the work of audio engineers.

The very first job that supported Nguyen Bao Trong when he entered the music industry was as a studio sound engineer. It was here that he learned the foundational mindset and technical thinking essential for sound engineering—laying the groundwork for his path toward becoming a songwriter and later, a music producer.