Where is the login and where can I find my mastering projects? We deprecated the old Mercury Mastering app as of the 5th of December 2019. If you need to grab any information or files, you can still log into the legacy app by clicking here.

Questions? We got answers.

A highly skilled Engineer will mix and/or master your music. All of our engineers have worked with Grammy-winning artists and have vast experience working with music of every genre. We’ve completed over 4000 (and counting) projects to date.

Of course! We will master the full track for you. Start to finish. Once that’s done we’ll send you both the sample (around 1 minute in length) and the full version. If you love the sample as is, you can then purchase the full track and have it released to you immediately. We take care of every free sample as if we were working on a paid project.

Stem Mastering is a more versatile option of normal mastering. We use a few “stems” (combined tracks such as drums, guitars, keyboards, etc.) of your song to achieve the final master. You can send 3-5 stereo channels that we will tweak individually to produce the absolute best sounding master. This is the preferred option for artists, engineers, and producers that have gotten their mix as far as they can take it but just need the extra bump to make it perfect.

Here are some different stems you can send us as well as an explanation of some of the adjustments we can make to each track:

  1. Drums (for compression and clarity without affecting the rest of the song)
  2. Bass (for getting a nice bass tone without affecting the rest of the mix with mud)
  3. Guitars (we can roll out the mud in the guitars and bring presence without taking out the punch in the rest of the mix)
  4. Vocals (we can get them sitting in the mix perfectly by our stem mastering isolation technique)

You can use any stems you want as long as you upload at least 3 and no more than 5.

We’d be happy to provide you with alternative versions at 50% off the price of a normal master.

Mastering is the process where an experienced mastering engineer uses specially designed equipment and software to correct problems and enhance the audio for each song. Most importantly, mastering takes your audio to the next level and produces a final product that is “label ready” by adding loudness, depth, clarity, etc. Our mastering engineers will adjust many variables including:

  •       Adjusting frequencies with analog and digital EQ
  •       Balancing left and right stereo tracks with stereo imaging
  •       Compressing and limiting the overall sound level to achieve a warm analog punch
  •       Adding dithering
  •       Establishing correct fades in and out of songs
  •        Establishing correct spacing between each track

If your project is very time-sensitive, contact us and we will make sure it is done on time. In general, we guarantee that your project will be finished in 7 business days, but the goal is 1-3 business days. If you really need it done quickly, we offer a rush service for an additional $19 per song. With stem mastering, it takes a bit longer, so please allow up to 10 business days maximum turnaround time and hopefully we can surprise you by having it done in 3-5 days.


We made a video on how we prefer the files prepared! You can check that out here:


For mastering, we offer unlimited free revisions. That will never change. For mixing, we offer 3 rounds of revisions. Most of our clients love our first take on the mix! Because we only produce excellent work, very rarely do we have an artist or producer ask for their money back. We have found that almost all of the clients who ask for refunds are attempting to abuse the system and have already released the work we have done. It is for this reason we don’t hand out refunds. Luckily, between the free sample track, unlimited revisions for mastering, 3 rounds of revisions for mixing, and 100% satisfaction guarantee, we have provided everything you need to receive an excellent product and service from us. We will always make sure that you are pleased and will do everything we can to treat you the way we would want to be treated!

If you run into problems, you can always reach us at [email protected] 

If you are not happy, we will make FREE revisions until you are happy. There is no limit to this. We are so confident in our work that we can offer unlimited revisions unlike many of our competitors.


You can, it just won’t sound as great. Our engineers have gone to school for mastering, acquired tens of thousands of dollars in equipment, worked with Grammy winning artists, and mastered tens of thousands of songs. The fact is that even most professional mixing engineers don’t trust themselves with the complexities of mastering. Like anything in life, it’s usually best to trust the experts.

In order to provide the best service, we employ a team of people to be in touch with you throughout your project. And of course your engineer will be on that team, reachable at any time via the comments section of your projects or via e-mail ([email protected] 


You will receive an e-mail from us with a link for download the moment your project is complete, and you can get an update at any time by sending us an e-mail ([email protected]).

We offer free revisions on all of the mastering that we do, but you might notice something in your recording or mix that you want to change after we have already mastered your project. In cases like this, we will remaster your music for 50% off after you make the changes on your end.


We always do a master sample for free, and if you like what you hear, you can choose to move forward by paying through our safe and secure website. We accept all major credit cards via Stripe, a leading online payment platform used by 100,000+ businesses. After payment is made, you will be redirected to a page where you can upload your files. Once the music is mixed or mastered, high quality WAV files will be uploaded to your account on this website, available for download for 30 days.



I still have questions. How can I reach you?

Understandable! We’re happy to help. Send us an email at info [at]

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