You're still not really clarifying anything about your use case...Yeah, if you want to make music you want rhythm and melody. That doesn't get us any closer to recommendations that meet your intended workflow.
Are you intending to play this alongside other instruments? Do you have any kind of controller you wan to use with it (eg MIDI keyboard, drum pad, ribbon controller, etc)? Are you trying to make something that you'll live-interact with, or something more generative that you more or less set up and let it run itself? Do you want to program in a melody, or "discover" melodies from a random source?
-- Bassman1805
No other sources for the final track will be eurorack format! I will record the output into a multitrack software editor and work with audio files there... or Live ...using Warping! I have midi controllers around...now the live interaction aspect depends on the specific nature of that voice/osc...the voices im interested in, are not traditional mono signal with clear frequency osc ..so it requires a different approach..maybe in between live interaction and generative. But im not here for the artistic aspect..( i know what i have to do there :) ) it's more for productive exchange of ideas!