Improvements and additions include multi-row designs and output row/bus selectors. A multi-row sequencer has two or more control voltage output knobs, each of which outputs a selected control voltage on a separate output bus or "row" when that step is active. A row selector can be set up to route a desired row to its output, and to change the selected row each time the sequencer loops through; this effectively multiplies the total length of the sequence that can be played, e.g., an 8-step, three-row sequencer can play a sequence of up to 24 individual notes. Or, different rows can be fed to different VCOs to play sequenced chords. Other possible improvements include the ability to "reset" at a given step or to skip selected steps, either of which allows sequences of different lengths to be