step'N'go! is a 16-step-sequencer with 6 independent tracks create to help my students to learn complex binary rhythms in a 4/4 bar. You can change metronome speed and you can use "mute" function for every track independently. In subpatches you can select your own samples if you don't like the default drum set.
You can download here: http://adrjork.altervista.org/puredatatutorials.html