This study entailed learning how to simultaneously play six instances of z3ta+ in 19-ET tuning with my Fender Mustang using a Roland GR-20 as the guitar to midi interface.
I improvised in an ambient-ish style and explored the fret board combinations both in both harmonic and timbrel relationships with some melodic considerations.
The GR-20 has a mode in which each string of the guitar is assigned a midi channel, channels 1 through 6. Thus hexaphonic output is possible. In this case each string’s output is sent out the GR-20 through a midi to usb adaptor into my laptop and then into Sonar 8.5. In Sonar I assign each string an instance of z3ta+ – a software synthesizer that comes with Sonar that is microtonal capable. Each of the six instances of z3ta+ have a unique preset voice assigned and has a 19-ET tuning file loaded. In the case of the high E string, channel 1, which sounded too high for me, is transposed at Sonar by -19 midi notes which yields the octave below the one I’m playing when using 19-ET.
One of the points of doing this is to make each string spatially different – in stereo-space the strings are arranged 5 3 1 2 4 6 in increments of 20%, i.e., 20, 40, 60 percent off center each side. No hard panning allows some of the stereophonic aspects of the zeta+ voices to be heard.
Here is the improvisation – about 11 minutes and 30 to 40 megabytes depending which high quality format you choose. No post processing was done except to cut off the sacrificial midi note at the end and a slight normalization of the volume applied equally to each channel.
Someone asked to see me play this set up – you’ll see it is not a challenge to play.
Here is the equipment used (excepting the amplifier):