I wanted a Lyra-8 but bought a midi controller for 1/10th the price.
AKAI MIdimix controlled drone synth in pure data
Consists of 4 sets of 4 sawtooth oscillators. Their level, tone (simple lop~ filter), and pitch is controlled on the left side faders, and dials above. Cross mod between 1&2 to 3&4 is set with the upper left two dials. The right section controls 4 soft ramp shaped LFOs for the levels of each set of oscillators. When the sets are tuned to a chord and the crossmod is on it can create some interesting musical results.
The 127 values afforded by midi cc isn't ideal for tuning, I opted to have the notes slide between quantised musical notes (mtof into a line~ object). Its still very fiddly if you want a decent range controlled by one dial.