diff --git a/ASD_Task_4.depend b/ASD_Task_4.depend
index a544662..dba1500 100644
--- a/ASD_Task_4.depend
+++ b/ASD_Task_4.depend
@@ -19,3 +19,23 @@
 	"player.h"
 	<ctime>
 
+1582872441 source:c:\mingw\c++ program\asd_task_4\list.cpp
+	"list.h"
+
+1582637383 c:\mingw\c++ program\asd_task_4\list.h
+	<string>
+	<windows.h>
+	<iostream>
+
+1582871510 source:c:\mingw\c++ program\asd_task_4\main.cpp
+	"player.h"
+	"list.h"
+	<conio.h>
+
+1582628103 c:\mingw\c++ program\asd_task_4\player.h
+	"list.h"
+
+1582872225 source:c:\mingw\c++ program\asd_task_4\player.cpp
+	"player.h"
+	<ctime>
+
diff --git a/ASD_Task_4.layout b/ASD_Task_4.layout
index 5ec49e7..3fe69e2 100644
--- a/ASD_Task_4.layout
+++ b/ASD_Task_4.layout
@@ -2,29 +2,29 @@
 <CodeBlocks_layout_file>
 	<FileVersion major="1" minor="0" />
 	<ActiveTarget name="Debug" />
-	<File name="main.cpp" open="1" top="0" tabpos="1" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="main.cpp" open="1" top="1" tabpos="1" split="0" active="1" splitpos="0" zoom_1="-1" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="4763" topLine="177" />
+			<Cursor1 position="189" topLine="0" />
 		</Cursor>
 	</File>
-	<File name="player.h" open="1" top="1" tabpos="5" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="list.cpp" open="1" top="0" tabpos="4" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="342" topLine="0" />
+			<Cursor1 position="4940" topLine="0" />
 		</Cursor>
 	</File>
-	<File name="list.cpp" open="1" top="0" tabpos="4" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="list.h" open="1" top="0" tabpos="2" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="2436" topLine="0" />
+			<Cursor1 position="270" topLine="9" />
 		</Cursor>
 	</File>
-	<File name="player.cpp" open="1" top="0" tabpos="3" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="player.h" open="1" top="0" tabpos="5" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="253" topLine="39" />
+			<Cursor1 position="342" topLine="0" />
 		</Cursor>
 	</File>
-	<File name="list.h" open="1" top="0" tabpos="2" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
+	<File name="player.cpp" open="1" top="0" tabpos="3" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="270" topLine="0" />
+			<Cursor1 position="2651" topLine="12" />
 		</Cursor>
 	</File>
 </CodeBlocks_layout_file>
diff --git a/bin/Debug/ASD_Task_4.exe b/bin/Debug/ASD_Task_4.exe
new file mode 100644
index 0000000..6f6173f
Binary files /dev/null and b/bin/Debug/ASD_Task_4.exe differ
diff --git a/list.cpp b/list.cpp
index 847a957..513df89 100644
--- a/list.cpp
+++ b/list.cpp
@@ -5,7 +5,7 @@ void createList(List &L) {
     * FS : first(L) diset Nil
     */
     //------------- YOUR CODE HERE -------------
-
+    L.first = NULL;
     //----------------------------------------
 }
 
@@ -17,7 +17,12 @@ address allocate(infotype x) {
 
     address P = NULL;
     //------------- YOUR CODE HERE -------------
-
+    P = new elmlist;
+    P -> info.ID = x.ID;
+    P -> info.location = x.location;
+    P -> info.name = x.name;
+    P -> next = NULL;
+    P -> prev = NULL;
     //----------------------------------------
     return P;
 }
@@ -27,7 +32,7 @@ void deallocate(address &P) {
     * FS : menghapus elemen yang ditunjuk oleh P (delete)
     */
     //------------- YOUR CODE HERE -------------
-
+    delete(P);
     //----------------------------------------
 }
 
@@ -37,7 +42,17 @@ void insertFirst(List &L, address P) {
     * FS : elemen yang ditunjuk P menjadi elemen pertama pada List L
     */
     //------------- YOUR CODE HERE -------------
-
+    if (L.first == NULL) {
+        P -> next = P;
+        P -> prev = P;
+        L.first = P;
+    } else {
+        P -> next = L.first;
+        P -> prev = L.first -> prev;
+        L.first -> prev -> next = P;
+        L.first -> prev = P;
+        L.first = P;
+    }
     //----------------------------------------
 }
 
@@ -47,7 +62,14 @@ void insertLast(List &L, address P) {
     * FS : elemen yang ditunjuk P menjadi elemen terakhir pada List L
     */
     //------------- YOUR CODE HERE -------------
-
+    if (L.first == NULL) {
+        insertFirst(L, P);
+    } else {
+        P -> next = L.first;
+        P -> prev = L.first -> prev;
+        L.first -> prev -> next = P;
+        L.first -> prev = P;
+    }
     //----------------------------------------
 }
 
@@ -60,7 +82,13 @@ address findElmByID(List L, infotype x) {
 
     address P = NULL;
     //------------- YOUR CODE HERE -------------
-
+    P = L.first;
+    do {
+        P = P -> next;
+    } while (P != L.first && P -> info.ID != x.ID);
+    if (P == L.first && P -> info.ID != x.ID) {
+        return NULL;
+    }
     //----------------------------------------
     return P;
 }
@@ -74,7 +102,13 @@ address findElmByName(List L, infotype x) {
 
     address P = NULL;
     //------------- YOUR CODE HERE -------------
-
+    P = L.first;
+    do {
+        P = P -> next;
+    } while (P != L.first && P -> info.name != x.name);
+    if (P == L.first && P -> info.name != x.name) {
+        return NULL;
+    }
     //----------------------------------------
     return P;
 }
@@ -85,7 +119,19 @@ void deleteFirst(List &L, address &P) {
     * FS : elemen pertama di dalam List L dilepas dan disimpan/ditunjuk oleh P
     */
     //------------- YOUR CODE HERE -------------
-
+    if (L.first == NULL) {
+        P = L.first;
+        P -> next = NULL;
+        P -> prev = NULL;
+        L.first = NULL;
+    } else {
+        P = L.first;
+        L.first = P -> next;
+        L.first -> prev = P -> prev;
+        P -> prev -> next = L.first;
+        P -> next = NULL;
+        P -> prev = NULL;
+    }
     //----------------------------------------
 }
 
@@ -95,7 +141,15 @@ void deleteLast(List &L, address &P) {
     * FS : elemen tarakhir di dalam List L dilepas dan disimpan/ditunjuk oleh P
     */
     //------------- YOUR CODE HERE -------------
-
+    if (L.first == NULL) {
+        deleteFirst(L, P);
+    } else {
+        P = L.first -> prev;
+        P -> prev -> next = L.first;
+        L.first -> prev = P -> prev;
+        P -> next = NULL;
+        P -> prev = NULL;
+    }
     //----------------------------------------
 }
 
@@ -106,7 +160,14 @@ void insertAfter(List &L, address &Prec, address P) {
     *      ditunjuk pointer Prec
     */
     //------------- YOUR CODE HERE -------------
-
+    if (L.first == NULL) {
+        insertFirst(L, P);
+    } else {
+        P -> next = Prec -> next;
+        P -> prev = Prec;
+        Prec -> next -> prev = P;
+        Prec -> next = P;
+    }
     //----------------------------------------
 
 }
@@ -117,7 +178,15 @@ void deleteAfter(List &L, address &Prec, address &P) {
     *      dan disimpan/ditunjuk oleh P
     */
     //------------- YOUR CODE HERE -------------
-
+    if (Prec -> next == L.first) {
+        deleteFirst(L, P);
+    } else {
+        P = Prec -> next;
+        P -> next -> prev = Prec;
+        Prec -> next = P -> next;
+        P -> next = NULL;
+        P -> prev = NULL;
+    }
     //----------------------------------------
 }
 
diff --git a/list.h b/list.h
index 4468d0f..27f1843 100644
--- a/list.h
+++ b/list.h
@@ -29,14 +29,16 @@ typedef struct elmlist *address;
 
 struct elmlist {
     //-------------  YOUR CODE HERE  -----------
-
+    infotype info;
+    address next;
+    address prev;
 
     //----------------------------------------
 };
 
 struct List {
     //-------------  YOUR CODE HERE  -----------
-
+    address first;
 
     //----------------------------------------
 };
diff --git a/main.cpp b/main.cpp
index a66a5c1..c28abd7 100644
--- a/main.cpp
+++ b/main.cpp
@@ -27,7 +27,7 @@ int main() {
 
     x.ID = index_ID++;
     x.location = "asset";
-    x.name = "re.wav";
+    x.name = "do'.wav";
     P = allocate(x);
     insertLast(L,P);
 
@@ -96,7 +96,8 @@ address inputMusic() {
     * YOU DON'T NEED TO MODIFY THIS
     */
     cout<<"input music filename (.wav) : ";
-    cin>>x.name;
+    cin.get();
+    getline(cin, x.name);
     cout<<"input music location "<<endl<<"(write - for default /asset location) :";
     cin>>x.location;
     if(x.location=="-") {
@@ -123,6 +124,8 @@ void runMenu(int menu) {
         // insert last music
         //------------- YOUR CODE HERE -------------
         cout<<"UNDER MAIN TENIS"<<endl;
+        P = inputMusic();
+        insertLast(L, P);
         //input music
         //insertLast()
 
@@ -143,7 +146,8 @@ void runMenu(int menu) {
         // play last music
         //------------- YOUR CODE HERE -------------
         cout<<"UNDER MAIN TENIS"<<endl;
-
+        P = L.first -> prev;
+        playMusic(P);
         //----------------------------------------
         break;
     case 6:
@@ -154,6 +158,8 @@ void runMenu(int menu) {
         P = findElmByName(L, x);
         if(P != NULL){
             cout<<"music found"<<endl;
+        } else {
+            cout<<"music NOT found"<<endl;
         }
         //----------------------------------------
         cout<<"press enter";getche();
@@ -161,8 +167,14 @@ void runMenu(int menu) {
     case 7:
         // search music by ID
         //------------- YOUR CODE HERE -------------
-        cout<<"UNDER MAIN TENIS"<<endl;
-
+        cout<<"input music ID : ";
+        cin >> x.ID;
+        P = findElmByID(L, x);
+        if(P != NULL){
+            cout<<"music found"<<endl;
+        } else {
+            cout<<"music NOT found"<<endl;
+        }
         //----------------------------------------
         cout<<"press enter";getche();
         break;
@@ -183,7 +195,10 @@ void runMenu(int menu) {
         // play previous music
         //------------- YOUR CODE HERE -------------
         cout<<"UNDER MAIN TENIS"<<endl;
-
+        if (P != NULL) {
+            P = P -> prev;
+            playMusic(P);
+        }
         //----------------------------------------
         break;
     case 11:
@@ -202,7 +217,7 @@ void runMenu(int menu) {
     case 13:
         // delete music by ID
         cout<<"input music ID : ";
-        cin>>x.name;
+        cin>>x.ID;
         deleteMusicByID(L, x);
         cout<<"press enter";getche();
         break;
diff --git a/obj/Debug/list.o b/obj/Debug/list.o
new file mode 100644
index 0000000..207d43b
Binary files /dev/null and b/obj/Debug/list.o differ
diff --git a/obj/Debug/main.o b/obj/Debug/main.o
new file mode 100644
index 0000000..a847aee
Binary files /dev/null and b/obj/Debug/main.o differ
diff --git a/obj/Debug/player.o b/obj/Debug/player.o
new file mode 100644
index 0000000..d7dd575
Binary files /dev/null and b/obj/Debug/player.o differ
diff --git a/player.cpp b/player.cpp
index 31ef288..b2fe7d2 100644
--- a/player.cpp
+++ b/player.cpp
@@ -1,7 +1,7 @@
 #include "player.h"
 #include <ctime>
 
-int randomInt(int  max_int) {
+int randomInt(int max_int) {
     /** YOU DON'T NEED TO MODIFY THIS */
     srand(time(NULL));
     return (rand() % max_int) + 1;
@@ -43,6 +43,24 @@ void shuffleList(List &L) {
     * FS : isi (elemen) dari list teracak
     */
     //------------- YOUR CODE HERE -------------
+    address P = L.first;
+    int jumlah = 0;
+    do {
+        P = P -> next;
+        jumlah++;
+    } while (P != L.first);
+    while (jumlah > 0) {
+        P = L.first;
+        int k = randomInt(jumlah);
+        while (k != 0) {
+            P = P -> next;
+            k--;
+        }
+        address Q = P;
+        deleteAfter(L, P -> prev, Q);
+        insertFirst(L, Q);
+        jumlah--;
+    }
 
         cout<<"UNDER MAIN TENIS"<<endl;
 
@@ -55,7 +73,13 @@ void playRepeat(List &L, int n) {
     *      dari lagu pertama hingga terakhir sebanyak n kali
     */
     //------------- YOUR CODE HERE -------------
-
+    address P = L.first;
+    for (int i = 0; i < n; i++) {
+        do {
+            playMusic(P);
+            P = P -> next;
+        } while (P != L.first);
+    }
         cout<<"UNDER MAIN TENIS"<<endl;
 
     //----------------------------------------
@@ -69,7 +93,13 @@ void deleteMusicByID(List &L, infotype x) {
     * FS : elemen dengan ID yang dicari dideallocate
     */
     //------------- YOUR CODE HERE -------------
-
+    address P;
+    if (L.first != NULL) {
+        if (findElmByID(L, x) != NULL) {
+            deleteAfter(L, findElmByID(L, x) -> prev, P);
+            deallocate(P);
+        }
+    }
         cout<<"UNDER MAIN TENIS"<<endl;
 
     //----------------------------------------