diff --git a/ASD_Task_4.depend b/ASD_Task_4.depend
index a544662..be5de8b 100644
--- a/ASD_Task_4.depend
+++ b/ASD_Task_4.depend
@@ -19,3 +19,23 @@
 	"player.h"
 	<ctime>
 
+1583302872 source:c:\users\user\documents\github\asd_task_4\main.cpp
+	"player.h"
+	"list.h"
+	<conio.h>
+
+1582808123 c:\users\user\documents\github\asd_task_4\player.h
+	"list.h"
+
+1583301631 c:\users\user\documents\github\asd_task_4\list.h
+	<string>
+	<windows.h>
+	<iostream>
+
+1583304616 source:c:\users\user\documents\github\asd_task_4\player.cpp
+	"player.h"
+	<ctime>
+
+1583303832 source:c:\users\user\documents\github\asd_task_4\list.cpp
+	"list.h"
+
diff --git a/ASD_Task_4.layout b/ASD_Task_4.layout
index 5ec49e7..3cd35c1 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="list.cpp" open="1" top="0" tabpos="4" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="4763" topLine="177" />
+			<Cursor1 position="2337" 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.h" open="1" top="0" tabpos="2" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="342" topLine="0" />
+			<Cursor1 position="1240" topLine="33" />
 		</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="main.cpp" open="1" top="0" tabpos="1" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="2436" topLine="0" />
+			<Cursor1 position="4789" topLine="0" />
 		</Cursor>
 	</File>
 	<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="253" topLine="39" />
+			<Cursor1 position="1543" topLine="39" />
 		</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.h" open="1" top="1" tabpos="5" split="0" active="1" splitpos="0" zoom_1="0" zoom_2="0">
 		<Cursor>
-			<Cursor1 position="270" topLine="0" />
+			<Cursor1 position="342" topLine="0" />
 		</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..ea09125
Binary files /dev/null and b/bin/Debug/ASD_Task_4.exe differ
diff --git a/list.cpp b/list.cpp
index 847a957..68df165 100644
--- a/list.cpp
+++ b/list.cpp
@@ -5,7 +5,7 @@ void createList(List &L) {
     * FS : first(L) diset Nil
     */
     //------------- YOUR CODE HERE -------------
-
+    first(L) == NULL;
     //----------------------------------------
 }
 
@@ -17,7 +17,10 @@ address allocate(infotype x) {
 
     address P = NULL;
     //------------- YOUR CODE HERE -------------
-
+        P = new elmlist;
+        info(P) = x;
+        next(P) = NULL;
+        prev(P) = NULL;
     //----------------------------------------
     return P;
 }
@@ -27,7 +30,7 @@ void deallocate(address &P) {
     * FS : menghapus elemen yang ditunjuk oleh P (delete)
     */
     //------------- YOUR CODE HERE -------------
-
+    delete P;
     //----------------------------------------
 }
 
@@ -37,7 +40,20 @@ void insertFirst(List &L, address P) {
     * FS : elemen yang ditunjuk P menjadi elemen pertama pada List L
     */
     //------------- YOUR CODE HERE -------------
-
+    if ( first(L) == NULL )
+    {
+        first(L) = P;
+        next(P) = P;
+        prev(P) = P;
+    }
+    else
+    {
+        next(P) = first(L) ;
+        prev(P) = prev(first(L));
+        next(prev(first(L))) = P;
+        prev(first(L)) = P;
+        first(L) = P;
+    }
     //----------------------------------------
 }
 
@@ -47,7 +63,19 @@ void insertLast(List &L, address P) {
     * FS : elemen yang ditunjuk P menjadi elemen terakhir pada List L
     */
     //------------- YOUR CODE HERE -------------
-
+    address Prec;
+    Prec = first(L);
+    if (first(L) == NULL)
+    {
+        insertFirst(L,P);
+    }
+    else
+    {
+        next(P) = first(L);
+        prev(P) = prev(first(L));
+        next(prev(first(L))) = P;
+        prev(first(L)) = P;
+    }
     //----------------------------------------
 }
 
@@ -60,7 +88,16 @@ address findElmByID(List L, infotype x) {
 
     address P = NULL;
     //------------- YOUR CODE HERE -------------
-
+    P = first(L);
+    do
+    {
+        P = next(P);
+    }
+    while((P != first(L)) && (x.ID != info(P).ID)) ;
+    if ((P == first(L)) && (x.ID != info(P).ID))
+    {
+        return NULL;
+    }
     //----------------------------------------
     return P;
 }
@@ -74,7 +111,16 @@ address findElmByName(List L, infotype x) {
 
     address P = NULL;
     //------------- YOUR CODE HERE -------------
-
+    P = first(L);
+    do
+    {
+        P = next(P);
+    }
+    while((P != first(L)) && (x.name != info(P).name));
+    if (P == first(L) && (x.name != info(P).name))
+    {
+        return NULL;
+    }
     //----------------------------------------
     return P;
 }
@@ -85,7 +131,21 @@ void deleteFirst(List &L, address &P) {
     * FS : elemen pertama di dalam List L dilepas dan disimpan/ditunjuk oleh P
     */
     //------------- YOUR CODE HERE -------------
-
+    P = first(L);
+    if (next(P) == first(L))
+    {
+        first(L) = NULL;
+        next(P) = NULL;
+        prev(P) = NULL;
+    }
+    else
+    {
+        first(L) = next(first(L));
+        next(prev(P)) = first(L);
+        prev(first(L)) = prev(P);
+        next(P) = NULL;
+        prev(P) = NULL;
+    }
     //----------------------------------------
 }
 
@@ -95,7 +155,19 @@ void deleteLast(List &L, address &P) {
     * FS : elemen tarakhir di dalam List L dilepas dan disimpan/ditunjuk oleh P
     */
     //------------- YOUR CODE HERE -------------
-
+    P = first(L);
+    if (next(P) == first(L))
+    {
+        next(P) = NULL;
+        prev(P) = NULL;
+        first(L) = NULL;
+    }
+    else
+    {
+        P = prev(first(L));
+        next(prev(first(L))) = next(P);
+        prev(first(L)) = prev(P);
+    }
     //----------------------------------------
 }
 
@@ -106,7 +178,10 @@ void insertAfter(List &L, address &Prec, address P) {
     *      ditunjuk pointer Prec
     */
     //------------- YOUR CODE HERE -------------
-
+    prev(next(Prec)) = P;
+    next(P) = next(Prec);
+    next(Prec) = P;
+    prev(P) = Prec;
     //----------------------------------------
 
 }
@@ -117,7 +192,21 @@ void deleteAfter(List &L, address &Prec, address &P) {
     *      dan disimpan/ditunjuk oleh P
     */
     //------------- YOUR CODE HERE -------------
-
+    P = next(Prec);
+    if (next(next(Prec)) == Prec)
+    {
+        next(P) = NULL;
+        prev(P) = NULL;
+        next(Prec) = Prec;
+        prev(Prec) = Prec;
+    }
+    else
+    {
+        next(Prec) = next(P);
+        prev(next(P)) = Prec;
+        next(P) = NULL;
+        prev(P) = NULL;
+    }
     //----------------------------------------
 }
 
diff --git a/list.h b/list.h
index 4468d0f..5b8988e 100644
--- a/list.h
+++ b/list.h
@@ -29,15 +29,15 @@ typedef struct elmlist *address;
 
 struct elmlist {
     //-------------  YOUR CODE HERE  -----------
-
-
+    infotype info;
+    address prev;
+    address next;
     //----------------------------------------
 };
 
 struct List {
     //-------------  YOUR CODE HERE  -----------
-
-
+    address first;
     //----------------------------------------
 };
 
@@ -60,6 +60,4 @@ void deleteAfter(List &, address &, address &);
 
 address findElmByID(List, infotype );
 address findElmByName(List, infotype );
-
-
 #endif // LIST_H_INCLUDED
diff --git a/main.cpp b/main.cpp
index a66a5c1..ac2bd88 100644
--- a/main.cpp
+++ b/main.cpp
@@ -125,6 +125,8 @@ void runMenu(int menu) {
         cout<<"UNDER MAIN TENIS"<<endl;
         //input music
         //insertLast()
+        P = inputMusic();
+        insertLast(L,P);
 
         //----------------------------------------
         cout<<"press enter";getche();
@@ -142,8 +144,8 @@ void runMenu(int menu) {
     case 5:
         // play last music
         //------------- YOUR CODE HERE -------------
-        cout<<"UNDER MAIN TENIS"<<endl;
-
+        P = prev(first(L));
+        playMusic(P);
         //----------------------------------------
         break;
     case 6:
@@ -161,7 +163,12 @@ void runMenu(int menu) {
     case 7:
         // search music by ID
         //------------- YOUR CODE HERE -------------
-        cout<<"UNDER MAIN TENIS"<<endl;
+         cout<<"input music ID (.wav) : ";
+        cin>>x.ID;
+        P = findElmByID(L, x);
+        if(P != NULL){
+            cout<<"music found"<<endl;
+        }
 
         //----------------------------------------
         cout<<"press enter";getche();
@@ -182,7 +189,11 @@ void runMenu(int menu) {
     case 10:
         // play previous music
         //------------- YOUR CODE HERE -------------
-        cout<<"UNDER MAIN TENIS"<<endl;
+        if(P!=NULL) {
+            P = prev(P);
+            playMusic(P);
+        }
+        break;
 
         //----------------------------------------
         break;
diff --git a/obj/Debug/list.o b/obj/Debug/list.o
new file mode 100644
index 0000000..41a4804
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..e07e09a
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..18395c5
Binary files /dev/null and b/obj/Debug/player.o differ
diff --git a/player.cpp b/player.cpp
index 31ef288..48b1996 100644
--- a/player.cpp
+++ b/player.cpp
@@ -43,8 +43,29 @@ void shuffleList(List &L) {
     * FS : isi (elemen) dari list teracak
     */
     //------------- YOUR CODE HERE -------------
+    address P = first(L);
+    int i = 0;
+    do
+    {
+        P = next(P);
+        i++;
+    }
+    while (P != first(L));
+    while ( i > 0)
+    {
+        P = first(L);
+        int j = randomInt(i);
+        while( j != 0)
+        {
+            P = next(P);
+            j--;
+        }
+        address Q = P;
+        deleteAfter(L, prev(P), Q);
+        insertFirst(L, Q);
+        i--;
+    }
 
-        cout<<"UNDER MAIN TENIS"<<endl;
 
     //----------------------------------------
 }
@@ -55,8 +76,20 @@ void playRepeat(List &L, int n) {
     *      dari lagu pertama hingga terakhir sebanyak n kali
     */
     //------------- YOUR CODE HERE -------------
-
-        cout<<"UNDER MAIN TENIS"<<endl;
+    address P;
+    int i;
+    i = 0;
+    P = first(L);
+    while (i < n )
+    {
+        do
+        {
+            playMusic(P);
+            P = next(P);
+        }
+        while (P != first(L));
+        i++;
+    }
 
     //----------------------------------------
 }
@@ -69,9 +102,17 @@ void deleteMusicByID(List &L, infotype x) {
     * FS : elemen dengan ID yang dicari dideallocate
     */
     //------------- YOUR CODE HERE -------------
-
-        cout<<"UNDER MAIN TENIS"<<endl;
-
+    address P,Q;
+    P = prev(P);
+    if (next(P) == first(L))
+    {
+        deleteFirst(L,P);
+    }
+    else if (info(next(P)).ID == x.ID )
+    {
+        deleteAfter(L,P,Q);
+        deallocate(Q);
+    }
     //----------------------------------------
 
 }