Producer, Engineer, Mixer: Who Actually Does What?
By Written by Peter McVeigh
Studio roles overlap and the names get used loosely. Here's what each person normally does, and why it matters when credits and money are involved.
On a small project, one person might produce, engineer, mix and play bass. On a bigger one, those could be five different people. The job titles get used loosely, so it's easy to book someone without being sure what you're paying for.
It matters for more than curiosity. Each role is credited, paid and treated differently, so getting the words right avoids some awkward conversations later.
The short version
Role: What they look after: A good question to ask them
Producer: The overall record: the songs, the performances and the decisions: What do you think this record needs?
Recording engineer: Capturing the sound: mics, signal path, the session itself: How would you set this room up?
Assistant engineer: Keeping the session running: setting up, patching, notes and files: What do you need from us before we start?
Mix engineer: Balancing everything recorded into the final stereo or immersive mix: What should we send you?
Mastering engineer: The final stage: overall tone, level and the files for release: What level and format do you want?
The producer
A producer is responsible for the record as a whole. That can mean helping to choose songs, changing arrangements, coaching a singer through a take, booking players and keeping the project on budget. Some are hands-on with the technical side and others hardly touch the desk.
In modern pop and beat-led music, the producer may also create much of the track from scratch. That can make them a songwriter too, which is a separate matter covered in our article on when a producer becomes a songwriter.
The recording engineer
The engineer turns performances into audio. They choose and place mics, set up the signal path, run the session and make sure what is recorded is usable. A good engineer also keeps a room calm and moving. Often, the sound of a record owes a lot to decisions made here, long before mixing.
Our practice Recording Engineer Contract shows the kinds of terms engineers usually agree.
The mix engineer
Mixing means taking all the recorded parts and shaping them into a finished track: levels, panning, EQ, compression, effects and automation. A fresh mixer can also bring perspective, because they haven't spent three weeks living with the demo. That's one reason many artists hire someone new for this stage.
The mastering engineer
Mastering is the last creative and technical check. The engineer adjusts the overall sound, sets levels so tracks sit together and prepares the final files. Many people prefer to hire someone other than the mixer, as a second pair of ears in a different room is much of its value. You can also learn to do it yourself as your confidence grows.
When one person does it all
Lots of independent projects have one person doing several jobs. I typically do all of this by myself.
It didn't start that way. On my first few albums, I'd hire a recording space. I worked with Frankie McClay, tracking in his studio, Einstein Studios, for my EP and for the drums on my second album.
For my solo debut album, we tracked almost everything in our space in the Oh Yeah Centre in Belfast, or in my house in the Short Strand at the time. The room acoustics in both were terrible. But we just leaned into that. Rather than trying to hide it, we accepted that was the sound, and we close-miked quite a lot of things.
I've used Pete Maher for mastering on a number of previous albums. As I've become more confident, I've started to master my tracks myself. I'm very happy with them, and they're all receiving radio play and sounding good on streaming and download platforms.
If you're doing several jobs for someone else, it's still worth naming each one. A person producing and mixing might reasonably charge for both, and be credited for both. Listing the jobs also shows what the price covers, and makes it clear what's extra if the project grows.
Why the names matter for money
Different roles can be treated differently when royalties are paid. In the UK, for example, PPL's performer roles guide treats engineers and mixers as non-payable roles, because they don't involve a live performance. A producer only qualifies as a performer in limited circumstances. In the USA, SoundExchange says it pays producers, mixers and engineers only through a Letter of Direction from a registrant.
The practical lesson is that you shouldn't assume a job title brings royalties with it. What you get paid usually comes down to what you agreed in writing.
What to do next
Before your next project, see what jobs there are and what you can do yourself. In this day and age, it's important to save money. But also realise it's worth hiring professionals, in order to watch how they work and learn from them, at the very least.
Then agree who is doing what, along with the credits, using our Credits and Metadata Sheet.
Sources
https://www.ppluk.com/wp-content/uploads/2025/11/PPL-Performer-Roles-Guide.pdf
https://www.soundexchange.com/faq/i-am-a-producer-mixer-or-engineer-for-several-big-artists-how-do-i-claim-royalties-for-these-recordings/
Disclaimer
General information for independent musicians, not legal, tax or financial advice. Deals and rules vary, so check your own contract and take professional advice before relying on this.