diff --git a/preonic/config.h b/preonic/config.h
index a42731f..dabc4aa 100644
--- a/preonic/config.h
+++ b/preonic/config.h
@@ -7,6 +7,7 @@
 	#define BOOT_SONG Q__NOTE(_F5), Q__NOTE(_G5), Q__NOTE(_C6)
 	#define STARTUP_SONG SONG(BOOT_SONG)
 
+	#define TONE_BASE	S__NOTE(_C5)
 	#define TONE_ALT	S__NOTE(_F5)
 	#define TONE_FN		S__NOTE(_G5)
 #endif
diff --git a/preonic/keymap.c b/preonic/keymap.c
index 1aac00d..68f3f39 100644
--- a/preonic/keymap.c
+++ b/preonic/keymap.c
@@ -48,6 +48,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 };
 
 #ifdef AUDIO_ENABLE
+	float tone_alt[][2] = SONG(TONE_BASE);
 	float tone_alt[][2] = SONG(TONE_ALT);
 	float tone_fn[][2] = SONG(TONE_FN);
 #endif
@@ -59,6 +60,11 @@ void keyboard_post_init_user(void) {
 layer_state_t layer_state_set_user(layer_state_t state) {
 	uint8_t layer = get_highest_layer(state);
 	switch(layer) {
+		case BASE:
+			#ifdef TONE_MAIN
+				PLAY_SONG(tone_base);
+			#endif
+			break;
 		case ALT:
 			#ifdef TONE_ALT
 				PLAY_SONG(tone_alt);