 //A simple chord player for teensy + audio which allows 
 // selection of the most common chords in pop 
 // (e.g. I, ii, IV, V, vi) with some decorations.
+
+// Hardware setup: 
+// * 4 potentiometers A0 - A3.  A3 could be logarithmic, as it is for volume.
+// * 4 buttons connecting p3-p6 to ground (configures them to use internal pullup resistors)
 
 // GUItool: begin automatically generated code
 AudioSynthSimpleDrum     drum2;          //xy=58,80

    }
    num++;

    Serial.print("Diagnostics (Audio CPU and Audio Mem max usages: ");
    Serial.print(AudioProcessorUsageMax());
    Serial.print(" ");
    Serial.println(AudioMemoryUsageMax());

  sgtl5000_1.volume(0.5);

  AudioInterrupts();
}

void showButtonStates() {
    Serial.print("buttons ");
    Serial.print(buttonStates[0]);
