Finalize your sound with

a creative ally in your corner.

Create your best possible work with a dedicated collaborator and

trusted expert who supports your vision and elevates your craft.

Finalize your sound with a creative ally in your corner.

Create your best possible work with a dedicated collaborator and trusted expert who supports your vision and elevates your craft.

Let's make your music.

(and other sounds too).

Mastering

Release with confidence.

In an era of creative isolation and doom-scrolling comparisons, you get world-class mastering that feels steady, supportive, and deeply human.

The result is a final sound that's powerful, polished, and true to your intent. Start with a free test master and hear for yourself, no strings attached.

Mastering

Release with confidence.

In an era of creative isolation and doom-scrolling-comparisons, you get world class mastering that feels steady, supportive, and deeply human.

The result is a final sound that's powerful, polished and true to your intent. Start with a free test master and hear for yourself, no strings attached.

Mixing

Hear what's in your head.

Mixing is technical and entails critical know-how and a comprehensive understanding of sound and music.

It’s also a fascinating, intimate art form that defines the emotional impact and narrative of your songs. 

Whether you’ve recorded at home or in a professional studio, I'll work closely with you in shaping your intentions and bringing your vision to life, all while elevating your sound to the highest standards. 

Sound Design

Shape the feeling of your creations.

An immersive art installation? A cutting-edge game? A quiet, emotional film?

Be it commercial, artistic, or cinematic, I take pride in crafting sound and music that feels true to your universe. 


I follow your direction with care, handle feedback with respect, and bring a genuine passion to the work. Sound design drives my creativity, and that same energy shapes my approach to mastering and mixing.

Sound Design

Shape the feeling of your creations.

An immersive art installation? A cutting-edge game? A quiet, emotional film?

Be it commercial, artistic, or cinematic, I take pride in crafting sound and music that feels true to your universe. 


I follow your direction with care, handle feedback with respect, and bring a genuine passion to the work. Sound design drives my creativity, and that same energy shapes my approach to mastering and mixing.

Collaborators include:

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Backward Clock Sound is a certified provider of
Apple Digital Masters
Backward Clock Sound is a certified provider of Apple Digital Masters

Your Experience.

Unlimited revisions. Always.

Step 1.

Share Your Vision.

We’ll hop on a call, (or exchange meaningful emails), to make sure I understand your vision.

You’ll guide me through creative direction,  scope, technical needs, deadlines and deliverables while  getting to know each other along the way.

Step 2.

Feedback and Review.

For mastering projects, I'll send a v1.  If it lands, we’ll wrap - if it doesn’t, we’ll discuss and adjust.

For every other kind of project, I want your feedback early and often. I throw the colours on the wall and send rough versions quickly. We'll shape the project to your vision over several versions.

This caters to the creative process while avoiding forcing you down a path you don’t want.

Step 3.

Wrap With Care.

Once direction is approved and your intentions are realized, you’ll receive a final version that meets industry standards with technical precision - all while preserving the creative impact.

You’ll always know what to expect, with projected dates when needed, and steady updates as your project is brought to a thoughtful, polished close.

Erika Toth

Musician/Songwriter
2Badd

"Jeremy mixed and mastered my band's debut EP, and I must say he crushed expectations - it was an absolute dream to work with him. He is super professional, very passionate, and genuinely cares about bringing out the best in each song. He knows his craft, can work on an extremely wide range of musical genres, and is super easy to communicate with. Thank you, Jeremy, for everything you did to make our dream a reality. I would not hesitate to recommend you to anyone looking for mixing and/or mastering, and you'll be my first call for any future projects."

Dustin Stern

Producer/Composer

"From the first phone consultation with Jeremy from Backward Clock Sound, I felt somehow even more inspired about my music, and that I had a new ally with genuine interest in helping to achieve my creative vision. Aside from this, they went above and beyond throughout the whole process. Offering mixing advice, and consulting on some creative ideas, all of which seemed to stem from his genuine care in my art. When wrapping the mastering process, I asked if they had any parting comments for me going forward. I expected a couple of points and instead received essentially an essay of thoughtful feedback and advice, again exemplifying how above and beyond Backward Clock Sound goes. This all not to mention how great the songs sounded after they were done the mastering process."

Andreas Helin

Creative Lead, Pinterest

"Jeremy is a musical magician. His energy and optimism make him a ton of fun to work with. In creating soundtracks for the Pinterest stories at Cannes Lions 2018, Jeremy delivered above expectations despite being on a tight timeline. Communication was exceptional throughout the project—working remotely and on a time-difference didn’t affect the day-to-day. He had the ability to handle more loose directions in combination with acting on very descriptive feedback. What I love the most was his enthusiasm to experiment with different genres in pursuit of finding the right vibe for the project."​

Dante Puleio

Artistic Director, Limón Dance Company

"A true artist of the highest caliber. Quality work, loves thinking outside the box, amazing to work with, excellent communication skills, timely delivery, and a kind and loving person to share space with."

Denique Leblanc

Producer/Songwriter

"I worked with Jeremy for over five years. His patience, determination and well-rounded knowledge allow him to create timeless audio masterpieces that go beyond the average mix. He takes feedback like a champ and puts a piece of his heart into every track he touches.

Ben Fee

Videographer/Director

"Sound mixing can completely change the viewing and storytelling experience. Working with Jeremy is an amazing experience. He brings curiosity, interest, passion, love, and an insane amount of ability to the table. He not only understands direction in a storytelling sense, but he brings ideas that make the story much stronger overall. His sound design doesn't only feel like part of the entire process, but it feels like it adds so much more than a collaborator could dream of. His work isn't just great. It becomes necessary."

Portfolio Selections.

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“The computer can't tell you the emotional story.
It can give you the exact mathematical design,
but what's missing is the eyebrows.”

– Frank Zappa
“The computer can't tell you the emotional story. It can give you the exact mathematical design, but what's missing is the eyebrows.”

– Frank Zappa

This is your art.

I’m Jeremy Costa. A  Montreal-born multidisciplinary artist, producer, and sound engineer.

I thrive in collaboration and creative problem-solving.

My diverse portfolio and varied skill set have helped me hone in on the foundations of who I am; merging the mindset of a contemporary artist with that of an innovative audio engineer.

These foundations have shaped my capacity to help countless artists and creators actualize their projects with engaging sound that represents their identity.

Whether you're an independent DIY artist or a big corporate team, my approach remains consistent. The priority is to make a meaningful contribution that protects and enhances your artistic intent.

Whatever stage your project is in, I’m here to help. Click below to book a call.

Awards and Nominations:


Denique, Shape 1

2019 ECMA Electronic Recording of the Year
(Co-production, mixing and mastering)


The Time Is Now, José Limón Dance Company

2021 Viewers Choice Award – BeBop Channel Dance & Theatre Film Festival
2021 Official Selection — Idaho Screendance Festival
(Sound design, audio mix)


Voies Parallèles, Nouveau Monde Media

2022 Prix Numix People's Choice for Innovation and Adaptation
(Original music, sound design, recording, mixing and mastering)


Vampires, It’s Nothing to Laugh At, Kinga Michalska

2023, Special Mention Visions du Réel
(Sound design, audio mix, 5.1 mix)

FAQ

How much does mastering cost?

Prices are always project dependent.

From song length to the number of tracks; a pop single, a progressive rock saga or an audio-book; streaming distribution or vinyl; they all have different needs.

Book a consultation to get an estimate tailored to your project.

How does the free test master work?

The test master works exactly like my Process. We’ll connect on a call or by email and exchange important information about your project. 

I’ll deliver a master for your review via a lossless streaming link, and you’ll respond with an approval or notes for me to revise. 

If you’re not satisfied with the exchange or the results,  no harm no foul - you don’t pay. My only priority is what’s best for your project, and only you can decide what that is.

How do revisions work?

Unlimited revisions. Always.

What file formats should I send for mixing / mastering?

Click here to view my Mastering Deliverables PDF.
Click
here to view my Mixing Deliverables PDF.

Do you offer feedback or direction if I need it?

I always leave my door open for this! Don't be shy!

How do I get started?

Let’s connect. 

The information on my website is secondary to a firsthand exchange. By sharing your goals or concerns,  we can find you the best possible solutions. 

Click the button below to get started.

Hear your sound the way you always intended.

Copyright 2025. Backward Clock Sound. All Rights Reserved.