There was a particular piece of music software for the Commodore 64 that had a sort of simultaneous polymetric sequencing, where you could treat its three oscillators as separate voices, but still play with ringmod and sync. Medusa kind of reminds me of an advanced version of that, with its relatively simple set of oscillators, single filter, two FM routings and two switchable sync routings, and parameter locks.
It’s also a great drone machine as well, and I agree it’s kind of underrated, but I don’t get the Lyra vibe from it as much.