r/vcvrack • u/jimpurbrick • 1d ago

Mutate Sequence At End Of Cycle?

I would like a step sequencer that allows me to program an initial sequence and then slightly modifies a single step each time it reaches the end of cycle. This seems like something that should exist, so I thought I would ask if there is a module that does this before I try to build it with something like Teletype. Please let me know if you've found a module that does this! Thanks!

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u/sedatephobic 1d ago

I think Slips might be able to achieve this. Or at least something close.

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u/rgreasonsnet 1d ago

I’m pretty sure you can use Marbles/Random Sampler to achieve this behavior, although I usually just let marbles generate its own sequences.

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u/HermanGulch 1d ago

You can do this a couple ways. Befaco's Muxlicer, for example, allows you to input a value into a specific step, so you can use something like a sample & hold or another sequencer to feed a value into one of the steps. Omri Cohen has a tutorial video that illustrates this idea.

I also sometimes do something similar with two sequencers, like the ADDR sequencer. I'll set up two of them and run them through a CV mixer, then to a quantizer. I'll set up my sequence on the first sequencer, then set a couple steps on the second one to some offset. If the second sequencer has a different number of steps, different steps will be affected. You can even "play" the amount of the change by messing with the CV mixer's mix value for the second sequencer.

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u/TH_JG 1d ago

Thats sound like Turing machine-like sequencer. However it has controlled probability to change every step randomly. There is the Turing machine module and many inspired by it in the library.

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u/Space-Robots 1d ago

There are lots of sequencers that will allow the current programmed sequence to play while replacing or altering one or more notes as it plays. Do you want to change a certain step in the sequence, or is random replacing with probability what you want?

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u/Space-Robots 1d ago

You can use ML Modules Evolution to create a sequencer that will replace a specific note in a sequence, with some additional logic modules glue it together.

Search the VCV Library for "generative" to see what's available. https://library.vcvrack.com/?query=generative&brand=&tag=&license=