Feat: improving MIDI

docs/tutorial_generators.md

@@ -27,13 +27,13 @@ Sequences of values drive music: arpeggios, parameter sweeps, rhythmic patterns.
 100 0.5 4 geom..  ;; 100 50 25 12.5
 ```
 
-Musical use -- build a harmonic series:
+Build a harmonic series:
 
 ```forth
-110 2 5 geom.. 5 rev note
+110 2 5 geom.. 5 rev freq
 ```
 
-That gives you 110, 220, 440, 880, 1760 (reversed), ready to feed into `note` or `freq`.
+That gives you 110, 220, 440, 880, 1760 (reversed), ready to feed into `freq`.
 
 ## Computed Sequences
 
@@ -73,14 +73,6 @@ The distinction: `gen` is for building data. `times` is for doing things.
 
 These give you raw indices as data on the stack. This is different from `bjork` and `pbjork` (covered in the Randomness tutorial), which execute a quotation on matching steps. `euclid` gives you numbers to work with; `bjork` triggers actions.
 
-Use euclid indices to pick notes from a scale:
-
-```forth
-: pick ( ..vals n i -- val ) rot drop swap ;
-c4 d4 e4 g4 a4    ;; pentatonic scale on the stack
-3 8 euclid         ;; get 3 hit positions
-```
-
 ## Transforming Sequences
 
 Four words reshape values already on the stack. All take n (the count of items to operate on) from the top:
@@ -143,39 +135,4 @@ Or replicate a value for batch processing:
 0.5 4 dupn 4 sum   ;; 2.0
 ```
 
-## Combining Techniques
-
-An arpeggio that shuffles every time the step plays:
-
-```forth
-c4 e4 g4 b4 4 shuffle
-drop drop drop     ;; keep only the first note
-note sine s .
-```
-
-Parameter spread across voices -- four sines with geometrically spaced frequencies:
-
-```forth
-220 1.5 4 geom..
-4 { @i 1 + pick note sine s . } times
-```
-
-Euclidean rhythm driving note selection from a generated sequence:
-
-```forth
-3 8 euclid         ;; 3 hit indices
-```
-
-A chord built from a range, then sorted high to low:
-
-```forth
-60 67 .. 8 rsort
-```
-
-Rhythmic density control -- generate hits, keep only the loud ones:
-
-```forth
-{ 0.0 1.0 rand } 8 gen
-```
-
 The generator words produce raw material. The transform words shape it. Together they let you express complex musical ideas in a few words.