Case study
From busy and reactive to clear rates and a business other people can help him run.
David Maria Trapp had plenty of work, but nothing felt predictable, and the constant fires were starting to spill into the rest of his life. He set clear rates and boundaries, built an outreach system, and built the business so his team could help carry it.
The numbers
- €670 → €860
- indie rate per song, about $760 → $975. Mastering is now included; it usually wasn’t
- €875 → €1,000
- established-act rate per song, about $995 → $1,135, mastering included
- 6 → 8
- his business confidence out of 10, before and after
- 80%
- the most of his capacity he now books, leaving room for rush work at a set fee
Busy, but reactive
David has been self-employed in audio since 2009 and has focused on mixing since 2019, including work for major labels. Money wasn’t the problem. Predictability was. He could rarely see more than three or four weeks ahead, almost all of his work came from people who contacted him, and he took on too much because he never knew if next month would be full.
Stem mixes had no fixed rules, so he often delivered close to a full mix at a stem-mix price.
“Three months ago I was busy but reactive. Work was coming in, but nothing felt predictable or solid. I was constantly putting out fires, decisions piled up, and I could feel that starting to affect things outside the business too. There was no crisis, but there was a ceiling, and I couldn’t tell exactly where it was or what was holding it in place.”
Rules instead of rethinking
It started with his real costs. Working out what he needed to earn against the hours he wanted to work was, he wrote, “a huge eye-opener. Honestly, it felt like a relief.”
From there he built a pricing structure he could stand behind: tiers by type of client, mastering included in every mix, clear rules for what counts as a stem mix, set rush fees, and a revision window so projects don’t drag on. Discounts became a planning tool for committed multi-song projects, never a way to close a sale.
“I have clear rules instead of having to rethink everything from scratch. Rates, revision policy, how to handle a late project, what a good client looks like. I’m not overthinking these anymore. The decisions are already made.”
Boundaries that paid off
Early in the program a manager texted on a Thursday evening asking for a mix by Friday. Instead of dropping everything, David offered Saturday and asked how urgent it really was. Monday turned out to be fine. A few weeks later he charged a 25% rush fee on a late project, and the client didn’t blink.
He now books himself to 80% of his capacity, so an urgent request is a scheduling question with a price, not a crisis.
“Setting boundaries clearly and holding them. Things like defining revision policies, calling a quick turnaround fee when a project comes in late, or simply telling a client that if materials arrive too late, the deadline won’t be met. That sounds straightforward, but actually doing it without apologizing or over-explaining. That took some practice. It paid off immediately.”
Outreach, and a team
David had never reached out to people he hadn’t worked with. Once he did, with short, genuinely personal messages, the replies were warm. One artist manager told him, “it’s awesome that you reached out directly.”
The last piece was making his systems concrete enough that other people could run them. By the end of the program his team was starting to handle project management and client communication when he wasn’t available, and a friend was taking over outreach follow-ups from a script.
“The outreach system, without question. Not just that it works technically, but that people actually respond warmly.”
In David’s words
If you’re on the fence: I went in thinking I needed more motivation or better habits. What I actually needed was structure. External, clearly defined structure that other people could help me hold. If you’re a freelance engineer who’s good at the work but finds the business side disproportionately exhausting, that’s not a character flaw. It might just mean you need the right systems around you. This program helped me build them.
Who should take it? Engineers who are already getting work but running the business on instinct. You don’t need to be in crisis. Feeling reactive and slightly overwhelmed is reason enough.
David Maria Trapp Mixing & Mastering Engineer, CologneMore client stories
Edsel Holden From negotiating against himself to his first $300 master. Read the story 
Julia Borelli From burnout and overwhelm to a calmer, better workflow. Read the story 
Jaspreet Singh From discounting to hold the sale to a rate he stands behind. Read the story These are real clients’ results, in their own words. Figures are self-reported by each client. Results vary with each engineer’s work, market and follow-through; nothing here is a promise of income.