algorithmic composition tool
	Xx Presentation and Documentation Xx is more than a multi-track MIDI sequencer for MacOS. It is also an algorithmic compositional tool--a self-contained music creation environment designed to be the natural complement to MetaSynth.... Download Xx 1.3 Demo version Click here to download Xx demo. Xx requires OMS for MIDI operation or the MIDIBridge OMS-Emulator (see the FAQ for information about MIDIBridge). Order Xx from the web Just by ordering a serial number here you will be able to transform the Demo version into the real version. Thus you won't need to make another download and your serial number will be e-mailed to you within 24 hours. Xx Tutorials Click here to get to the on-line and downloadable Xx tutorials REQUIREMENTS: Runs natively in OS 8 & 9. Runs in classic mode under OS X (requires OS 9 system folder). Be sure to try the demo!

Xx MIDI Sequencer Composition Software
Eric Wenger's Xx was designed as an audio utility to simplify using MIDI files with Metasynth. As with all of Eric's releases, he created a hit. Xx is more than the natural utility complement to MetaSynth, it is a multi-track MIDI sequencer for Mac PowerPC. So, what is Xx ? Xx is more than a multi-track MIDI sequencer. It is also an algorithmic compositional tool, a self-contained music creation environment, and a stepping stone past midi to complex instrumental synthesis. Advanced graphic visualization Each of your individual tracks are shown in a single window, visually revealing the harmonic relationship of your composition. Xx uses a standard “piano roll” notation with color coding to give you the best representation of track polyphony. Xx's window will adapt automatically to your screen dimensions.	AI algorithms for composition Xx is a powerful algorithmic compositional tool.The analyzation algorithm can understand the key/scale/mode of your composition, and through it's use of artificial intelligence, (i.e. patterning, randomization, counterpoint, chordal creation, mutation, evolve and more) enhance your composition. Or, with automatic music generation, Xx will generate various arrangements and theme ideas, giving you a place from which to start and respond. This type of user/computer dialog will enable you to create music in just a few minutes or take your personal compositional style into new areas. A simple user interface Xx has an intuitive interface which has been polished over the years to a highly integrated stage; from a single window, you have access to all the tools and functions needed to create your composition. No more multiple windows or palettes cluttering up your creative environment. Xx is quick to learn and easy to use.
USING Xx FILES	Xx WITHOUT AN EXTERNAL SYNTHESIZER
Export to MetaSynth Xx allows you to convert your midi files to MetaSynth pictures or MetaSynth preset libraries for further manipulations or advanced instrumental synthesis. Import of Pict files In a similar way to MetaSynth, Xx allows you to convert any picture (PICT) to MIDI data. Thanks to this ability you may now use your preferred painting software as a composition tool ! You may also transcribe a MetaSynth sound to a Standard midi file for further manipulation or for score printing.	Beatnik software synth Thanks to Headspace, Xx fully integrates the Beatnik software synthesizer, allowing you to create music without any external synthesizers or midi gear. That makes Xx the simplest and cheapest way to create music on your Macintosh. The future RMF export will make it the sequencer of choice to publish your music for the web.
	Xx MIDI Composer and MetaSynth demos and accompanying information, as well as libraries of new sounds and pictures, are available at www.uisoftware.com.