scale: calculate diatonic scales

1 files changed, 8 insertions, 0 deletions

diff --git a/scale.mjs b/scale.mjs
index 9bec03b..d33a5c3 100644
--- a/scale.mjs
+++ b/scale.mjs
@@ -182,3 +182,11 @@ export function MinorScale(tonic) {
     const intervals = [2, 1, 2, 2, 1, 2];
     return new Scale(tonic, intervals);
 }
+
+// well, a lot of them.
+export const allDiatonicScales = chromaticScale.flatMap(tonic => {
+    return [
+        MajorScale(tonic),
+        MinorScale(tonic)
+    ];
+})