5 best software to find song keys and create awesome mashups

Madalina Dinita
by Madalina Dinita
Former Managing Editor
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  • When mixing songs, you need to make sure that the tracks you play are in the same key so that the whole mix blends seamlessly and creates a pleasant experience for your audience.
  • Assessing a song's key might be quite challenging to do all by yourself, especially if you don't have any musical instrument laying around that you're proficient with. This is where song key recognition software can help you.
  • You can discover more about music software in our dedicated section.
  • If you're an audiophile, you might want to check the audio section of our website.

Are you looking for a song key finder software? Well, if the answer is yes, you’re in the right place. In this article, we’re going to list some of the best tools that allow you to identify song keys so that you can quickly compose mashups.

Being a DJ is synonym to being creative. In a sense, you’re like a music chef, mixing sounds and songs, stirring in the pot from time to time to make sure that the ingredients blend perfectly.

When mixing songs, you need to make sure that sounds are in the same keys to that the tune sounds similar when played together. The aim is to create a new song by intermingling different songs and making them harmonically sound as one.

That’s quite a challenging and this is where song key recognition software can help you.


What’s the best software to find song keys?

Mixed in Key

Main screen of Mixed in Key

Mixed in Key is another great software that can help you find the key of a song with ease. The application comes with a simple and friendly user interface, and as for the features, here are some notable features that this application offers:

  • Advanced key detection that allows you to easily find compatible songs to mix
  • Energy Level detection that allows you to combine the songs with a similar tempo
  • ID3 tag editor that you can use to clean up ID3 tags and make your music library look neater
  • Customizable ID3 tagging
  • Ability to automatically add up to 8 cue points
  • Supports export of cue points to Traktor and Serato
  • Available on both Mac and PC

Get Mixed in Key now

Traktor DJ software

traktor DJ software to find song keys

Traktor is a music software for professionals. If you’re a DJ and you’re looking for a powerful tool that can also quickly identify keys and support harmonic mixing, then you may want to check out this tool.

There is a wide variety of Traktor versions that you can use, all perfect for distinct categories of users. For example, TRAKTOR LE 2 DJ is perfect for beginners but still offers you all the features and options that you need to mix sounds.

On the other hand, Traktor Pro 2 is a true monster featuring four desks and a bevy of creative features that you can use to unleash your imagination.

At the same time, Traktor’s developers offer users a series of tutorials on how to better take advantage of all the features supported by the tool.

Speaking of song key recognition, they have published a tutorial on this topic. For more information on key detection and harmonic mixing, go to Traktor’s support page.

You can also watch the video guide below:

Check out Traktor’s offer

Audio Key Chain

Audio Key Chain software to find song keys

If you don’t want to download any tool on your computer, try Audio Key Chain. This online music key and tempo estimation tool allows you to quickly identify the key and tempo of your entire song library in order to find compatible tracks to create your mashups.

Using this tool is very simple: all you need to do is drag and drop your tracks into the dropzone and then click on the “Upload Tracks” button. Wait until the analysis process is over and you can then share the results with your friends, as well as edit the track data. You can also save the results to Audio Key Chain’s public collection.

It is worth mentioning that the platform supports only MP3 and WAV files and there is a 15MB file size limit for the tracks that you upload.

Test Audio Key Chain

Want to record high-quality audio? Here are the best audio recording apps for Windows 10!


keyfinder software to find song keys

KeyFinder is a very interesting tool that can help you really unleash your imagination as a DJ. The code itself is open source and can run on multiple platforms.

This DJ software focuses only on harmonic and tonal mixing and it supports a wide array of codecs. Keep in mind that this tool is a minimalist one: it doesn’t feature library management options nor a media player.

According to its developer, KeyFinder’s algorithm’s is very good, putting it in the same league as paid key estimation software.

It is worth mentioning that the developer no longer offers KeyFinder support for Windows, meaning that you’ll need to download an older version of the tool. However, we can confirm it still works on Microsoft’s platform.

djay PRO

djay pro software to find song keys

This DJ software offers advanced sound analysis features, allowing users to detect key, BPM and beat. To make things even more interesting, information is presented as frequency-based colored waveforms.

Here are djay PRO key features:

  • Spotify integration: You can access a library of over 20 million songs, create your own playlists where you can add those catchy songs that stood the test of time, as well as add a series of effects on the fly.
  • Built for Windows 10: djay PRO was especially designed for Windows 10. It offers support for touchscreen and desktop, native UWP app, as well as enhanced support for Surface Studio and Surface Dial.
  • Advanced audio processing features that include advanced time-stretching of up to ±75%, pitch shifting of up to ±1 octave, audio mixing with adjustable crossfader curves, and more.

So, if you’re looking for more than a song key detection software, you can check out djay PRO’s official webpage.

As you can see, in this article we included professional DJ software as well as easy-to-use simple tools that are perfect for beginners. When choosing which tool to use, keep in mind that beginners may have a hard time using an advanced tool.

So, if you plan to use a key detection software occasionally, the best solution is to actually use an online tool such as Audio Key Chain. If you’re a pro and mixing sounds is part of your job, then you should definitely go for an advanced song key recognition software.

FAQ: Learn more about song key detection software

  • How to find what key a song is in?

You can probably do that by ear, provided that you have an instrument to match the notes in the song, such as a piano. The less complicated solution is to turn to specialized software such as Mixed in Key or KeyFinder.

  • What is the key of a song?

In music theory, the key of a song is the scale (minor or major) that the song revolves around. Therefore, a song that’s based on a minor scale will be in a minor key. For example, a song that’s in the A minor key will revolve around A major’s seven notes: A, B, C#, D, E, F#, and G#.

  • How can knowing a song’s key help me?

If you’re a DJ, knowing the keys of the songs you’re playing can be very important to keep a certain mood for the party you’re hosting. Slipping a minor key song among major key songs could probably ruin the vibe of the evening for your guests.

Editor’s Note: This post was originally published in August 2019 and has been since revamped and updated in April 2020 for freshness, accuracy, and comprehensiveness.

  • You should add PCDJ DEX 3 to this list – has a key finder that detects both musical key and camelot scale key. Uses a batch analyzation feature much like DJAY does but I find it more accurate.