diff --git a/keyboards/lets_split/keymaps/default/config.h b/keyboards/lets_split/keymaps/default/config.h
index 5a6261c4f7cf..60e23f816d29 100644
--- a/keyboards/lets_split/keymaps/default/config.h
+++ b/keyboards/lets_split/keymaps/default/config.h
@@ -18,20 +18,19 @@ You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 
-#ifndef CONFIG_USER_H
-#define CONFIG_USER_H
+#pragma once
 
-#include "../../config.h"
+ // place overrides here
+#define DEFAULT_LAYER_SONGS { SONG(QWERTY_SOUND), \
+                              SONG(COLEMAK_SOUND), \
+                              SONG(DVORAK_SOUND) \
+                            }
 
 /* Use I2C or Serial, not both */
-
 #define USE_SERIAL
 // #define USE_I2C
 
 /* Select hand configuration */
-
 #define MASTER_LEFT
 // #define MASTER_RIGHT
 // #define EE_HANDS
-
-#endif
diff --git a/keyboards/lets_split/keymaps/default/keymap.c b/keyboards/lets_split/keymaps/default/keymap.c
index f782781843df..05f9bda8d8be 100644
--- a/keyboards/lets_split/keymaps/default/keymap.c
+++ b/keyboards/lets_split/keymaps/default/keymap.c
@@ -1,7 +1,5 @@
 #include QMK_KEYBOARD_H
 
-extern keymap_config_t keymap_config;
-
 // Each layer gets a name for readability, which is then used in the keymap matrix below.
 // The underscores don't mean anything - you can have a layer called STUFF or any other name.
 // Layer names don't all need to be of the same length, obviously, and you can also skip them
@@ -16,15 +14,12 @@ extern keymap_config_t keymap_config;
 enum custom_keycodes {
   QWERTY = SAFE_RANGE,
   COLEMAK,
-  DVORAK,
-  LOWER,
-  RAISE,
-  ADJUST,
+  DVORAK
 };
 
-// Fillers to make layering more clear
-#define _______ KC_TRNS
-#define XXXXXXX KC_NO
+#define LOWER  MO(_LOWER)
+#define RAISE  MO(_RAISE)
+#define ADJUST MO(_ADJUST)
 
 const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 /* Qwerty
@@ -138,74 +133,27 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
 
 };
 
-#ifdef AUDIO_ENABLE
-float tone_qwerty[][2]     = SONG(QWERTY_SOUND);
-float tone_dvorak[][2]     = SONG(DVORAK_SOUND);
-float tone_colemak[][2]    = SONG(COLEMAK_SOUND);
-#endif
-
-void persistent_default_layer_set(uint16_t default_layer) {
-  eeconfig_update_default_layer(default_layer);
-  default_layer_set(default_layer);
+uint32_t layer_state_set_user(uint32_t state) {
+  return update_tri_layer_state(state, _LOWER, _RAISE, _ADJUST);
 }
 
 bool process_record_user(uint16_t keycode, keyrecord_t *record) {
   switch (keycode) {
     case QWERTY:
       if (record->event.pressed) {
-        #ifdef AUDIO_ENABLE
-          PLAY_SONG(tone_qwerty);
-        #endif
-        persistent_default_layer_set(1UL<<_QWERTY);
+        set_single_persistent_default_layer(_QWERTY);
       }
       return false;
-      break;
     case COLEMAK:
       if (record->event.pressed) {
-        #ifdef AUDIO_ENABLE
-          PLAY_SONG(tone_colemak);
-        #endif
-        persistent_default_layer_set(1UL<<_COLEMAK);
+        set_single_persistent_default_layer(_COLEMAK);
       }
       return false;
-      break;
     case DVORAK:
       if (record->event.pressed) {
-        #ifdef AUDIO_ENABLE
-          PLAY_SONG(tone_dvorak);
-        #endif
-        persistent_default_layer_set(1UL<<_DVORAK);
-      }
-      return false;
-      break;
-    case LOWER:
-      if (record->event.pressed) {
-        layer_on(_LOWER);
-        update_tri_layer(_LOWER, _RAISE, _ADJUST);
-      } else {
-        layer_off(_LOWER);
-        update_tri_layer(_LOWER, _RAISE, _ADJUST);
-      }
-      return false;
-      break;
-    case RAISE:
-      if (record->event.pressed) {
-        layer_on(_RAISE);
-        update_tri_layer(_LOWER, _RAISE, _ADJUST);
-      } else {
-        layer_off(_RAISE);
-        update_tri_layer(_LOWER, _RAISE, _ADJUST);
-      }
-      return false;
-      break;
-    case ADJUST:
-      if (record->event.pressed) {
-        layer_on(_ADJUST);
-      } else {
-        layer_off(_ADJUST);
+        set_single_persistent_default_layer(_DVORAK);
       }
       return false;
-      break;
   }
   return true;
 }
diff --git a/keyboards/lets_split/keymaps/default/rules.mk b/keyboards/lets_split/keymaps/default/rules.mk
index 457a3d01d4a4..e69de29bb2d1 100644
--- a/keyboards/lets_split/keymaps/default/rules.mk
+++ b/keyboards/lets_split/keymaps/default/rules.mk
@@ -1,3 +0,0 @@
-ifndef QUANTUM_DIR
-	include ../../../../Makefile
-endif