More variable in large.
Modulation is all about change: a "mod wheel" lets you change one or several parameters of the sound dynamically from beside the keyboard. This one is illuminated...
I wasn't going to process this, but did (gently) because I liked the symmetry of an analog synth with digital controls being blipped via digital camera with analog-esque controls (Analog Efex Pro 2).
I uploaded a few Oxford street shots to Flickr (right from here).