Set Theory – Parallel Interval

This is probably the most common harmonic mixing transition – corresponding to one counter-clockwise rotation on the circle of fifths. In this case, the first track is in Bb minor phrygian, and the second track is Eb minor phrygian. So the root key has shifted up by 5 semitones. I call this a parallel interval because, due to the modes being the same, all notes are transposed an equal amount. Most harmonic mixing tools don’t actually differentiate between the different minor/major modes (instead only detecting major or minor and the root), so a parallel interval is a bit more specific. The transition starts at 6:10.

Ost & Meyer Vs 7 Skies – Dharma (Original Mix)
Markus Schulz feat. Sir Adrian – Away (Cosmic Gate Remix)

https://soundcloud.com/caustik/set-theory-parallel-interval

Here’s a full mix which uses this transition exclusively:

Set Theory – Complement

There’s a concept in musical set theory called complement, where the set of notes is given as the set of all notes which are not included in the original set. Applied to a musical mode, there may be multiple complements. In this case, I’ve chosen the complement whose root is a tritonic interval (6 semitones) from the original note. Specifically, the mode of the first track is A minor dorian and the mode of the second track is Eb Major Mixolydian.

This transition begins at 4:36, pivots at 5:34, and completes at 6:04. Try to pay attention to the notes involved, most prominent being the tritonal interval between roots. I’ll be uploading more examples of various mode transitions, cause it’s neat IMO.

Erick Strong – Payback (Matthew Nagle Remix)
Quincy Weigert – On A Midsummer Night (Bjorn Akesson Remix)

https://soundcloud.com/caustik/set-theory-complement

Mini-Mix 007 [Trance]

01. M.I.K.E. – Salvation (Valentino Kanzyani Remix)
02. RST, Jared Knapp – Encompass (Tritonal Remix)
03. Andy Moor – Halcyon (Original Mix)
04. Gabriel & Dresden – Arcadia (Swing To Chunk Mix)
05. [loops back to 01]

loopable trance genre harmonic mix

New live DJ technique (using free track samples)

You know how you can browse tracks on sites like Beatport.com, and you get to preview a portion of the track? Well, those previews are just MP3 files that are split from the full tracks. Each preview is usually about 2 minutes, and you can get the URLs for an entire genre via RSS feeds.

So, you can use the Firefox plugin “FlashGot” to automatically download all of the MP3 files that are referenced in the “Top 100” House music RSS feed on Beatport. Then, you can run them through key detection software to get musical key info on them all.

Once you have those samples and key information on them, it’s possible to mix them together live, without ever having listened to the tracks beforehand. Here’s a recording of me mixing 8 tracks in about 10 minutes with this style:

[ Download MP3 ]

It’s a lot of work to keep the mix going, since the samples are so small. I’ve been pretty much warping the tracks in real time, figuring out where the phrases are, getting them sync’d up, and timing the drops. There’s a lot of room for error if you lose concentration, or if you just happen to get a track that doesn’t line up quite right. So having an emergency fallback to save the mix in these bad scenarios would be good..

It’s an interesting technique, for one because it’s free to get these track samples. That saves a lot of money, considering each track is normally either 1.99$ or 2.49$.. — also, the speed of mixing is a lot faster, so it really helps you develop your mixing skills, and forces you to learn recovery techniques.

Probably more on this technique in the future!