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The update was released at the end of December 2012, with a number of changes to the algorithm. This is the most recent version of Mixed In Key’s algorithm, having first made a début hiding inside of the company’s DJ software, Flow ( read our review here). # of results off by a single fifth: 7 Mixed In Key 6.0.2 # of correct tracks ( vs human volunteer consensus): 40 (66% correct) Major/Minor Triad Test: Not possible – no way to manually test. The algorithm has always needed some work (“We’re still refining our BPM and Key detection” reads their support page), but if an avid fan or angry artist spots an error, they can report incorrect keys and BPMs. Artists aren’t given the option to report their own keys to Beatport – so even if the author has an associated key that they know they wrote the song in, it apparently gets tossed out and replaced with a detected key. THE COMPETITORS Beatport’s Key Detectionīeatport has their own detected key for almost every song in their catalog – which is why we started with their own catalog as a place to source tracks.

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If you disagree, feel free to make a case for a different consensus on a track in the comments. With that in mind, we’ve only used songs in our test that had a clear consensus (read: simple majority) from our human test group. Our test group included myself and 6 awesome well-suited volunteers with experienced ears (even a few perfect-pitch ears in the group) keying tracks from the DJTT community – thanks for listening to these tracks and helping out! It is possible that our ears are somewhat fallible, which is why we’re putting all of our data at the end of the article. We’ve heard from some sources that even a groups of pitch-perfect classically trained musicians have a significant rate of disagreement about the key of certain songs. It’s critical to not build a dependency on tools, but instead use them to augment a sense of when something works or doesn’t. We mention the old adage “trust your ears!” in almost every single article about harmonic mixing. The latter error is less likely to cause DJs an issue in the mix, as there’s still a good chance that it will share many of the same notes as the track that you’re mixing in to/out of.

There wasn’t time before publication but it may be added here soon.Ĭommon errors that you’ll see notated in the results below include a mixup of major/minor – something that can be hard to detect even for a human at times, as well as “harmonically forgivable” analyses, which are off by 1 fifth.

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By that right, we took 61 of the top songs from Beatport, using all genres on the site, and ran them through our human testers and all 10 software options.Įditor’s Note: We’d really like to run a third test as another control that uses very common three chord progressions. Real World Test – Instead of doing a test with music across all kinds of genres, we decided to focus on what almost each of these applications claim to do well – music that DJs are commonly playing. The fascinating results below show how some applications are optimized for detecting chords and others struggle with telling if they’re major or minor. Major / Minor Triads (“Control”) – In this test, we constructed incredibly simple 30 second long songs with a drum loop and a piano playing a major or minor triad for the 24 keys.

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How does Traktor Pro fare versus Traktor DJ? Is Rekordbox reliable? Is the new Mixed In Key worth an upgrade? We last stood just three entrants against each other in a harmonic showdown in 2012, but this year we’ve got 12 different algorithms competing in our key detection comparison.

Harmonic mixing has become an integral part of a lot of digital DJs arsenals, reflected by the presence of key detection algorithms in a variety of softwares.