Music Sequencer - for V3 only

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I a seeking a way to manually select a pattern or patterns and duration of said pattern(s) for a display I created and have hooked up to the audio jack on my Pixelblaze/audio sensor board. Is there a way to choose, without rewriting code, the pattern(s) that look correct on my display? I have viewed the Youtube video in regards to soundRays but the author of said video moves way too quickly for me to actually catch what is gong on. Any help (guidance) would be greatly appreciated.