Feature: The Midnight Wood

Musician Lauria Intravia hosts a great segment on the OverClocked Podcast called 'Between the Lines'. She did a great analysis of the musical style of Hyper Light Drifter, especially the track 'The Midnight Wood'.

Link: The OverClocked Podcast

Presentation: The Sound & Music of Hyper Light Drifter

I spoke at GDC 2017 with Sound Designer Akash Thakkar about the creative process of making audio for the game Hyper Light Drifter.

Technique: Quantized Phasing

While working on The Floor is Jelly, I really pushed myself to try some new things. Mapping music to the geography of levels, using individual raindrops to generate music on the fly… Some of these ideas fell flat on their face, but one idea that managed to squeeze its way in is one I’d like to talk about. For lack of a better term, I’ll call it Quantized Phasing.

The idea at first was straightforward enough; I wanted to experiment with phase music, a musical form that appeared in the 1960s after tape experiments by folks like Terry Riley, Earle Brown, and Steve Reich. However it didn’t take me long to realize that using the gradual phasing style of that period was probably not going to serve the context that I was attempting to use it in. There was nothing particularly phasey about moving around in a watery level, so I started experimenting with ways to dial back the smeary nature of phase material and dial in the accessibility a bit. The solution I came up with was taking the phasing material and quantizing it, so that the material still phased in a way, but adhered to a more musical grid (namely, triplets and duplets). The result is similar to Steve Reich’s Clapping Music, where one overlaid pattern periodically shifts forward a beat.

'Clapping Music' by Steve Reich

The experiments for the water music proved to be too athletic and unusual for a peaceful, natural locale, so we ended up using them for the final world of The Floor is Jelly. A glitchy world.

Phase Structure

Level   Phase       Harmony
-----   --------    ---------------------
1       5.5 : 11    A Minor to C Major
2       6   : 11    F 6 no3 to E Minor b6
3       6.5 : 11    D Minor 9
4       7   : 11    C Major 6
5       7.5 : 11    Bb Major 6
6       8   : 11    A Minor 9 add6 no7
7       8.5 : 11    G Major 2 add6
8       9   : 11    B Minor 7 add11
9       9.5 : 11    C Major 2 add6
10      10  : 11    F Major add2
11      10.5: 11    E Lydian b7