Initial work

libs/music/piano.ts

@@ -0,0 +1,16 @@
+namespace music {
+    /**
+     * Get the frequency of a note.
+     * @param name the note name, eg: Note.C
+     */
+    //% weight=1 help=music/note-frequency
+    //% blockId=device_note block="%note"
+    //% shim=TD_ID color="#FFFFFF" colorSecondary="#FFFFFF"
+    //% note.fieldEditor="note" note.defl="262"
+    //% note.fieldOptions.editorColour="#FF1493" note.fieldOptions.decompileLiterals=true
+    //% useEnumVal=1
+    //% weight=10 blockGap=8
+    export function noteFrequency(name: Note): number {
+        return name;
+    }
+}

libs/music/pxt.json

@@ -8,6 +8,7 @@
         "shims.d.ts",
         "melodies.ts",
         "music.ts",
+        "piano.ts",
         "sounds.jres",
         "sounds.ts",
         "ns.ts"