diff --git a/keyboards/planck/keymaps/gitdrik/config.h b/keyboards/planck/keymaps/gitdrik/config.h
new file mode 100644
index 000000000000..0acf06dc5495
--- /dev/null
+++ b/keyboards/planck/keymaps/gitdrik/config.h
@@ -0,0 +1,56 @@
+/* Original code probably copyright 2015-2017 Jack Humbert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Passed along from planck default to Finnish SFS 5966 by gitdrik, 2020. */
+
+#pragma once
+
+#ifdef AUDIO_ENABLE
+    #define STARTUP_SONG SONG(PLANCK_SOUND)
+    // #define STARTUP_SONG SONG(NO_SOUND)
+
+    #define DEFAULT_LAYER_SONGS { SONG(QWERTY_SOUND), \
+                                  SONG(COLEMAK_SOUND), \
+                                  SONG(DVORAK_SOUND) \
+                                }
+#endif
+
+/*
+ * MIDI options
+ */
+
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+
+#define MIDI_BASIC
+
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+
+// Most tactile encoders have detents every 4 stages
+#define ENCODER_RESOLUTION 4
diff --git a/keyboards/planck/keymaps/gitdrik/keymap.c b/keyboards/planck/keymaps/gitdrik/keymap.c
new file mode 100644
index 000000000000..bdaef207634f
--- /dev/null
+++ b/keyboards/planck/keymaps/gitdrik/keymap.c
@@ -0,0 +1,231 @@
+/* Copyright 2015-2017 Jack Humbert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Modified from planck default to Finnish SFS 5966 by gitdrik, 2020. */
+
+#include QMK_KEYBOARD_H
+#include "muse.h"
+
+enum planck_layers {
+  _BASE,
+  _LEFT,
+  _RIGHT,
+  _LEFTER,
+  _RIGHTER
+};
+
+#define LEFT TT(_LEFT)
+#define RIGHT MO(_RIGHT)
+#define LEFTER MO(_LEFTER)
+#define RIGHTER MO(_RIGHTER)
+
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+
+/* Base
+ * ,-----------------------------------------------------------------------------------.
+ * | Tab  |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  |   Å  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Esc  |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |   Ö  |   Ä  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Ctrl | Shift|   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  | Shift| Enter|
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |   Z  | GUI  | Alt  |Left2 | Left |BkSpc | Spc  |Right |Rghter|   <  |   -  |   /  |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_BASE] = LAYOUT_planck_grid(
+    KC_TAB,  KC_Q,    KC_W,    KC_E,   KC_R,   KC_T,    KC_Y,   KC_U,   KC_I,    KC_O,    KC_P,    KC_LBRC,
+    KC_ESC,  KC_A,    KC_S,    KC_D,   KC_F,   KC_G,    KC_H,   KC_J,   KC_K,    KC_L,    KC_SCLN, KC_QUOT,
+    KC_LCTL, KC_LSFT, KC_X,    KC_C,   KC_V,   KC_B,    KC_N,   KC_M,   KC_COMM, KC_DOT,  KC_RSFT, KC_ENT ,
+    KC_Z,    KC_LGUI, KC_LALT, LEFTER, LEFT,   KC_BSPC, KC_SPC, RIGHT,  RIGHTER, KC_NUBS, KC_SLSH, LSFT(KC_7)
+),
+
+/* Left
+ * ,-----------------------------------------------------------------------------------.
+ * | Tab  |  F10 |  F9  |  F8  |  F7  |   {  |   }  |   7  |   8  |   9  |   ^  |   =  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Esc  |  F11 |  F6  |  F5  |  F4  |   (  |   )  |   4  |   5  |   6  |   +  |   *  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | RCtrl| Shift|  F3  |  F2  |  F1  |   [  |   ]  |   1  |   2  |   3  | Shift| Enter|
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | F12  | GUI  | Alt  |Lefter| Left |BkSpc | Spc  |Right |   0  |   ,  |   -  |   /  |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_LEFT] = LAYOUT_planck_grid(
+    KC_TRNS, KC_F10,  KC_F9,   KC_F8,   KC_F7,   RALT(KC_7), RALT(KC_0), KC_7,    KC_8,   KC_9,    LSFT(KC_RBRC), LSFT(KC_0),
+    KC_TRNS, KC_F11,  KC_F6,   KC_F5,   KC_F4,   LSFT(KC_8), LSFT(KC_9), KC_4,    KC_5,   KC_6,    KC_PPLS,       KC_PAST,
+    KC_RCTL, KC_TRNS, KC_F3,   KC_F2,   KC_F1,   RALT(KC_8), RALT(KC_9), KC_1,    KC_2,   KC_3,    KC_TRNS,       KC_TRNS,
+    KC_F12,  KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS,    KC_TRNS,    KC_TRNS, KC_0,   KC_COMM, KC_PMNS,       KC_PSLS
+),
+
+/* Right
+ * ,-----------------------------------------------------------------------------------.
+ * | Tab  |  ◌̄   |  ◌̈	  |  ◌́	  |  ◌̀	  |  ◌̃	  |  ◌̆   | Home |  Up  | End  | Ins  | PgUp |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Esc  |  @   |   $  |   °  |   &  |   #  |   %  | Left | Down | Right| Del  | PgDn |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | RCtrl| Shift|   ”  |   «  |   »  |  ‚ „ |   ‰  |PlayPs|  <<  |  >>  | Shift| Enter|
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |   “  | GUI  | Alt  |Lefter|      |BkSpc | Spc  |Right |Rghter| Vol- | Vol+ | Mute |
+ * `-----------------------------------------------------------------------------------'
+ */
+ [_RIGHT] = LAYOUT_planck_grid(
+    KC_TRNS,          RALT(LSFT(KC_RBRC)), KC_RBRC,          KC_EQL ,          LSFT(KC_EQL),     RALT(KC_RBRC), RALT(KC_NUHS), KC_HOME, KC_UP,   KC_END , KC_INS , KC_PGUP,
+    KC_TRNS,          RALT(KC_2),          RALT(KC_4),       RALT(LSFT(KC_0)), LSFT(KC_6),       LSFT(KC_3),    LSFT(KC_5),    KC_LEFT, KC_DOWN, KC_RGHT, KC_DEL,  KC_PGDN,
+    KC_RCTRL,         KC_TRNS,             RALT(LSFT(KC_2)), RALT(LSFT(KC_4)), RALT(LSFT(KC_3)), RALT(KC_6),    RALT(KC_5),    KC_MPLY, KC_MPRV, KC_MNXT, KC_TRNS, KC_TRNS,
+    RALT(LSFT(KC_5)), KC_TRNS,             KC_TRNS,          KC_TRNS,          KC_TRNS,          KC_TRNS,       KC_TRNS,       KC_TRNS, KC_TRNS,  KC_VOLD, KC_VOLU, KC_MUTE
+),
+
+/* Lefter
+ * ,-----------------------------------------------------------------------------------.
+ * | Tab  |  § ½ |   "  |   €  |      |  þ Þ |   ¡  |   !  |   ı  |  œ Œ |  ◌̛ ◌̉ | ◌̋  ◌̊ |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Esc  |  ə Ə |  ß ẞ |  ð Ð |   '  |      |      |      |   ĸ  |   ◌̵  |  ø Ø |  æ Æ |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Ctrl | Shift|  × · | ◌̧  ◌̨ |      |   \  |  ŋ Ŋ |  µ — |  ’ ‘ | ◌̣  ◌̇ | Shift| Enter|
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |  ʒ Ʒ | GUI  | Alt  |Lefter|      | BkSpc| NbSp |      |Rghter|   |  | – ◌̦  |   ?  |
+ * `-----------------------------------------------------------------------------------'
+ */
+ [_LEFTER] = LAYOUT_planck_grid(
+    KC_TRNS,   KC_GRV,    LSFT(KC_2), RALT(KC_E),   RALT(KC_R), RALT(KC_T),    RALT(LSFT(KC_1)), LSFT(KC_1), RALT(KC_I),    RALT(KC_O),    RALT(KC_P),    RALT(KC_LBRC),
+    KC_TRNS,   RALT(KC_A),RALT(KC_S), RALT(KC_D),   KC_NUHS,    RALT(KC_G),    RALT(KC_H),       RALT(KC_J), RALT(KC_K),    RALT(KC_L),    RALT(KC_SCLN), RALT(KC_QUOT),
+    KC_TRNS,   KC_TRNS,   RALT(KC_X), RALT(KC_EQL), RALT(KC_V), RALT(KC_MINS), RALT(KC_N),       RALT(KC_M), RALT(KC_COMM), RALT(KC_DOT),  KC_TRNS,       KC_TRNS,
+    RALT(KC_Z),KC_TRNS,   KC_TRNS,    KC_TRNS,      KC_TRNS,    RALT(KC_BSPC), RALT(KC_SPC),     KC_TRNS,    KC_TRNS,        RALT(KC_NUBS), RALT(KC_SLSH), LSFT(KC_MINS)
+),
+
+/* Righter
+ * ,-----------------------------------------------------------------------------------.
+ * |      | Reset| Debug|      |      |      |      |WheLft|  MUp |WheRgt| MBt2 | WheUp|
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      | MBt4 | MBt3 | MBt2 | MBt1 |      |      | MLeft| MDown|MRight| MBt1 | WheDn|
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |MUSmod|Mus on|Musoff|      |      | MBt1 | MBt2 | MBt3 |      |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |      |      |      |Rghter|Light-|Light+|      |
+ * `-----------------------------------------------------------------------------------'
+ */
+ [_RIGHTER] = LAYOUT_planck_grid(
+    KC_TRNS, RESET,   DEBUG,   KC_NO,   KC_NO,   KC_NO, KC_NO, KC_WH_L, KC_MS_U, KC_WH_R, KC_BTN2, KC_WH_U,
+    KC_TRNS, KC_BTN4, KC_BTN3, KC_BTN2, KC_BTN1, KC_NO, KC_NO, KC_MS_L, KC_MS_D, KC_MS_R, KC_BTN1, KC_WH_D,
+    KC_TRNS, KC_TRNS, MU_MOD,  MU_ON,   MU_OFF,  KC_NO, KC_NO, KC_BTN1, KC_BTN2, KC_BTN3, KC_TRNS, KC_TRNS,
+    KC_NO,   KC_TRNS, KC_TRNS, KC_TRNS, KC_TRNS, KC_NO, KC_NO, KC_TRNS, KC_TRNS, KC_BRID, KC_BRIU, KC_NO
+),
+
+};
+
+#ifdef AUDIO_ENABLE
+  float plover_song[][2]     = SONG(PLOVER_SOUND);
+  float plover_gb_song[][2]  = SONG(PLOVER_GOODBYE_SOUND);
+#endif
+
+bool muse_mode = false;
+uint8_t last_muse_note = 0;
+uint16_t muse_counter = 0;
+uint8_t muse_offset = 70;
+uint16_t muse_tempo = 50;
+
+void encoder_update(bool clockwise) {
+  if (muse_mode) {
+    if (IS_LAYER_ON(_RIGHT)) {
+      if (clockwise) {
+        muse_offset++;
+      } else {
+        muse_offset--;
+      }
+    } else {
+      if (clockwise) {
+        muse_tempo+=1;
+      } else {
+        muse_tempo-=1;
+      }
+    }
+  } else {
+    if (clockwise) {
+      #ifdef MOUSEKEY_ENABLE
+        tap_code(KC_MS_WH_DOWN);
+      #else
+        tap_code(KC_PGDN);
+      #endif
+    } else {
+      #ifdef MOUSEKEY_ENABLE
+        tap_code(KC_MS_WH_UP);
+      #else
+        tap_code(KC_PGUP);
+      #endif
+    }
+  }
+}
+
+void dip_switch_update_user(uint8_t index, bool active) {
+    switch (index) {
+        case 0: {
+#ifdef AUDIO_ENABLE
+            static bool play_sound = false;
+#endif
+            if (active) {
+#ifdef AUDIO_ENABLE
+                if (play_sound) { PLAY_SONG(plover_song); }
+#endif
+                layer_on(_LEFTER);
+            } else {
+#ifdef AUDIO_ENABLE
+                if (play_sound) { PLAY_SONG(plover_gb_song); }
+#endif
+                layer_off(_LEFTER);
+            }
+#ifdef AUDIO_ENABLE
+            play_sound = true;
+#endif
+            break;
+        }
+        case 1:
+            if (active) {
+                muse_mode = true;
+            } else {
+                muse_mode = false;
+            }
+    }
+}
+
+void matrix_scan_user(void) {
+#ifdef AUDIO_ENABLE
+    if (muse_mode) {
+        if (muse_counter == 0) {
+            uint8_t muse_note = muse_offset + SCALE[muse_clock_pulse()];
+            if (muse_note != last_muse_note) {
+                stop_note(compute_freq_for_midi_note(last_muse_note));
+                play_note(compute_freq_for_midi_note(muse_note), 0xF);
+                last_muse_note = muse_note;
+            }
+        }
+        muse_counter = (muse_counter + 1) % muse_tempo;
+    } else {
+        if (muse_counter) {
+            stop_all_notes();
+            muse_counter = 0;
+        }
+    }
+#endif
+}
+
+bool music_mask_user(uint16_t keycode) {
+  switch (keycode) {
+    case _LEFTER:
+      return false;
+    default:
+      return true;
+  }
+}
diff --git a/keyboards/planck/keymaps/gitdrik/readme.md b/keyboards/planck/keymaps/gitdrik/readme.md
new file mode 100644
index 000000000000..f064565182e1
--- /dev/null
+++ b/keyboards/planck/keymaps/gitdrik/readme.md
@@ -0,0 +1 @@
+# Finnish SFS 5966 layout by gitdrik 2020.
diff --git a/keyboards/planck/keymaps/gitdrik/rules.mk b/keyboards/planck/keymaps/gitdrik/rules.mk
new file mode 100644
index 000000000000..67528de9c834
--- /dev/null
+++ b/keyboards/planck/keymaps/gitdrik/rules.mk
@@ -0,0 +1,3 @@
+SRC += muse.c
+MOUSEKEY_ENABLE = yes
+AUDIO_ENABLE = yes