Back before the dawn of time (ie, in the 1980s), I created this ancient and venerable MIDI software for the Atari ST with the help of my friend Laurence Glazier, operating jointly as Datamusic. A long time ago now, Laurence and I agreed to release the program into the public domain: yes, folks, it’s free!
Quaint though it may seem now in many ways, Fractal Music does still work, and produces results that are still, as far as I know, unique. It was even working in the NoSTalgia Atari ST emulator under Mac OS X up to version 10.6 (Snow Leopard), but unfortunately, NoSTalgia is a PowerPC application and no longer runs under Mac OS X 10.7 Lion and later, which are strictly Intel only. Fractal Music sort of worked under Lion in another emulator called Hatari, but that’s now failed in later versions of Lion. If anyone knows of a reliable Atari ST emulator that runs, with MIDI output, on Intel Macs, I’d be interested.
I can, however, happily report that, although I haven’t fully tested it yet, Fractal Music seems to run pretty well in Steem for Windows — and even better, this works in Parallels Desktop on my Mac, running Windows 7. That was a major surprise, but it now means all is not lost for us Mac users. (That said, as I write, it’s taking an awfully long time to load a 49k MIDI file ... but it’s finally got there.)
UPDATE: That was in Parallels Desktop 6 running in Mac OS X 10.7 Lion, but to my complete amazement it still works in Parallels Desktop 10 running in Mac OS X 10.10 Yosemite (still Windows 7).
For years now Fractal Music has been featured very favourably on Tim Conrardy’s Tim’s Atari MIDI World site. Sadly, I've just learned that Tim died in 2009, so many thanks, Tim, and rest in peace.
Here’s an edited version of the original sales blurb:
Fractal Music is a powerful real-time music generator and processor
As a music generator, Fractal Music:
- Produces billions of different musical combinations from Fractal Mathematics according to parameters set by the user
- Incorporates randomisable parameters
- Has 16 tracks
The program uses a cyclical, iterative fractal process — a three dimensional extension of Clifford Pickover’s ‘fractal popcorn’ (although the visual result is very different as you can see here) — to generate monophonic lines of music. The three dimensions represent the pitch, placement in time and key velocity of each new note. The result is real music with melodic, rhythmic and dynamic interest — even including rests! Recognisable near-repetitions of musical shapes occur frequently, lending extra validity to the musical output. It is possible for the user, by judicious setting of parameters (and with the editing features described below), to produce subtle variations on the same music in a number of different ways.
As a music processor, Fractal Music offers extraordinary music editing facilities (and some standard ones), including:
- Quantizing to relative or absolute values
- Stretching and squashing of pitch range
- Lengthening and shortening of time-scale, resulting in simultaneous different tempi
- Shifting backwards and forwards in time
- Reflecting the music in an axis at any angle, with a selected note and time as origin, with these short cuts:
- Inversion about any note (or between notes) — i.e. reflection in a horizontal axis
- Retrograde (turning the music backwards) — i.e. reflection in a vertical axis
- Rotating the music through any angle, with a similarly selected origin, with this short cut:
- Retrograde inversion — equivalent to rotating through 180 degrees.
Some of these techniques (transposition, stretching, squashing, inversion, retrograde) have been familiar to composers for centuries. Fractal Music does them automatically. Others (reflection, rotation) are logical extensions of these concepts, but extremely difficult to do manually, involving tedious and repetitive maths.
Other features include:
- Full two-way MIDI File compatibility
- Fractal Music’s own two file formats, for saving parameters only or parameters plus any MIDI data generated
- Ability to run on all ST and STE machines (1 megabyte recommended, but not essential)
- Compatibility with monochrome or colour (medium resolution) systems
- Tempo range of 41.18 to 480 beats per minute
- Time resolution of 96 ‘ticks’ per beat
- Keyboard shortcuts for all mouse commands, plus some extra keyboard commands, with help screens giving keyboard commands at all points in the program
- Full MIDI event list