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Task/Musical-scale/Lambdatalk/musical-scale.lambdatalk

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+Using the musicalScale() javascript function found in this wiki page, we build a lambdatalk interface to output the 8 notes of the C major diatonic scale, and more.
+
+{def note
+ {lambda {:i}
+  {round {* 261.63 {pow 2 {/ :i 12}}}}}}
+
+{def scale
+ {lambda {:notes}
+  [{S.map {lambda {:i} {note :i},} :notes}]}}
+
+{def play
+ {lambda {:n}
+  {input {@ type="button"
+            value="Play :n"
+            onclick="musicalScale({scale :n});"}}}}
+
+1) diatonic up
+{play 0 2 4 5 7 9 11 12}
+
+2) diatonic down
+{play 12 11 9 7 5 4 2 0}
+
+3) twelve notes of the octave plus one
+{play {S.serie 0 12}}
+
+4) one more ... from Fantasia (Disney Studios, 1940)
+{play 0 2 3 5 7 3 7 7 6 2 6 6 7 3 7 7 0 2 3 5 7 3 7 12 10 7 3 7 10 10 10 10}
+->