Intro

Denis Kosiak is a Grammy-nominated producer, mixer, and recording engineer based in Los Angeles. He was Khalid's right-hand engineer for years, working together from 2017 across Suncity, Free Spirit, Scenic Drive, and nearly 200 collaborations. His work on "Talk" earned a Record of the Year nomination. He's credited on Justin Bieber's Justice, which was nominated for Album of the Year. And he co-produced "Silver Platter" on the Grammy-winning Barbie The Album.

What makes Denis's story worth studying isn't the credits. It's how it started. He didn't come in with connections. He came in through the door at Record Plant, one of the most legendary studios in LA, and worked his way up through the engineering ranks until he was in the room when it mattered. He met Khalid there as a staff engineer, and turned that into one of the most significant artist-engineer partnerships in modern pop.

Denis also runs a mobile studio setup that follows artists on the road. Hotel rooms, tour buses, dressing rooms. He's built a workflow that prioritizes adaptability over perfection.

Denis is a case study in what happens when you combine proximity, consistency, and a willingness to be useful, which is basically the thesis of everything we talk about here.

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Questions

Foundation & Mindset

1. When did you stop thinking of yourself as just an engineer and start seeing yourself as someone running a business?
2. You've described Record Plant as "cut-throat" with intense hours. What was the skill you built in that environment that had nothing to do with audio? The political skill, the stamina skill, the diplomacy skill?
3. A lot of engineers are still in the "sleeping on couches to catch opportunities" phase. What separates the people who graduate from that phase from the people who get stuck in it?

Positioning

1. You produce, mix, and engineer. That's three different jobs. When someone asks "what do you do," what do you say, and has the answer changed over time?
2. You've become strongly associated with vocal production. Was that a deliberate lane choice, or did you just keep getting asked to do vocals until it became your thing?
3. "DK's Mobile Studio" shows up in credits databases as an engineering location. Running a mobile rig is both a workflow and a positioning statement. It says "I go where the artist is." Was that strategic or just practical?
4. When a new artist or label is deciding whether to work with you, what's the thing that closes it? Your credits, a test session, a conversation, something else?

Network & Opportunity

1. You met Khalid at Record Plant in late 2017 and that turned into nearly 200 collaborations. What happened early on that made that relationship become what it became? Because a lot of engineers meet big artists and never hear from them again.
2. When you build something that deep with one artist, it can become the foundation of your whole career. How did you think about that at the time, and how do you think about it now looking back?
3. I actually met you through our mutual friend Jon Castelli, and that's a good example of how this industry really works. The people you know introduce you to the people you need to know. How deliberate are you about building relationships with other engineers, not just artists and producers?

Outreach & Consistency

1. You've said consistency beats talent. Can you make that concrete. What was your actual weekly routine at Record Plant (and/or today) that turned consistency into real credits? Not the philosophy, the schedule.
2. What's the version of "consistency" nobody talks about? The boring, thankless, invisible part that doesn't make it into interviews?

Pricing

1. Do you wish someone had talked to you about money earlier in your career? Not rates, but the actual financial side. Taxes, saving, knowing when you could afford to say no. What did you have to figure out the hard way?

Systems & Long Game

1. You record on tour buses, in hotel rooms, in dressing rooms. What's the system that keeps that work from falling apart? File naming, session templates, backup protocols, communication rules with the artist?
2. What does a week look like when you're not on the road with an artist? How much time goes to the business side versus the creative side?
3. Walk us through the actual tools. What are you using day to day to run the business side? Calendar, invoicing, file delivery, communication. What does the stack look like?
4. You've had a long chapter defined by one major relationship. What does the next chapter look like for you?

Closing

1. You've been supportive of what we're building here. Why? What is it about this conversation, the business of mixing, that you think engineers need to hear?
2. If you could go back to the version of you who just walked into Record Plant for the first time, and you could only give one piece of advice that has nothing to do with gear or technique, what would it be?
3. One thing you'd absolutely do again. One thing you'd never do again.