+static void
+scherzo_press_note (scherzo_t *scherzo, pitch_t pitch)
+{
+ int i;
+
+ /* Do nothing if this note is already pressed. */
+ for (i = 0; i < scherzo->notes_pressed.num_pitches; i++)
+ if (scherzo->notes_pressed.pitches[i] == pitch)
+ return;
+
+ pitch_group_add_pitch (&scherzo->notes_pressed, pitch);
+
+ if (scherzo->pedal_pressed)
+ pitch_group_add_pitch (&scherzo->notes_pedaled, pitch);
+
+ scherzo_update_notes_and_chord (scherzo);
+}
+