The S4M Sequencing Toolkit is intended to be a comprehensive resource for building sequencers and related tools for live-coding, live-performance, and composition in Scheme For Max.
The first series (and only so far...) is the Step Sequencer Tutorial series. This includes an e-book(let) tutorial that builds up to a live-codable multi-track step sequencer with GUI and midi example controls.
Each step of the tutorial has an accompanying scm and Max file in the tutorial-code directory.
Read the narrative here: https://iainctduncan.github.io/s4m-stk/
The intention is to add video tutorials for each step of the tutorials, but I am publishing them as text first to collect feedback prior to making videos.
Please feel free to submit suggestions or error reports in the issue tracker.