Select Page

Who We Are

Elise Holstein – Executive Producer / Co-Founder

Elise Holstein is the co-founder and Executive Producer of Supa Fine, blending sharp organizational instincts with a strong creative sensibility. With a background in design, project management, and hospitality—including roles at the J. Paul Getty Museum and The Four Seasons—she brings both structure and style to every campaign. Elise leads client communications, scheduling, and project coordination at Supa Fine, guiding each project with clarity, warmth, and an intuitive sense of what the work needs. A lifelong artist and thoughtful collaborator, she’s passionate about sustainability, storytelling, and building lasting relationships. Outside the studio, you’ll find her in the kitchen, in the garden, or deep in conversation with someone she just met.

Sam Casas – Sound Designer / Mixer / Co-Founder

Sam Casas is a mixer and sound designer with over 25 years of experience helping brands tell their stories with clarity, depth, and a little cinematic flair. With a background in music technology and a career that spans thousands of commercials for clients like Nike, Microsoft, and Coca-Cola, Sam brings a calm, diagnostic approach to every project—cutting through the noise to get to what really matters. Now leading Supa Fine Sound Design, he partners with agencies and editors who value smart collaboration, quick turnarounds, and a mix that hits just right. Off the clock, he’s a proud dad, coffee nerd, and dog cuddler based in Los Angeles.

Guillermo Marin – Sound Designer / Mixer

Born in Spain and based in Los Angeles, Guillermo Marin is a mixer and producer with a storyteller’s ear and a sharp technical edge. His credits span global artists like Bunbury and Mon Laferte, composers such as Roque Baños and Federico Jusid, and top media brands including FOX Sports, Lionsgate, and BET. With a background in both music and film, Guillermo brings emotional clarity and polish to every mix—whether it’s shaping the arc of a commercial, producing vocals, or elevating a campaign’s impact. Now mixing out of Supa Fine, he partners with creatives who value precision, speed, and sound that connects. He also shares his expertise through educational tutorials online.