diff --git a/README.md b/README.md
index f0e0349..d314339 100644
--- a/README.md
+++ b/README.md
@@ -4,26 +4,50 @@
 
 ```plantuml
 @startuml
-Class Oiseau {
-    - int frequenceNourriture
-    - boolean mort
-    - LocalDate dateDernierRepas
-    - Couleur couleurDuPlumage
-    - /boolean aFaim
-    - /String nom
-    + Oiseau(String nom,int frequenceNourriture)
-    + Couleur getCouleurDuPlumage()
-    + void changeJour(LocalDate nouvelleDate)
-    + boolean isMort()
+class Artist {
+    - string name
+    + Artist(string name)
+    + boolean Equals(object obj)
+    + int GetHashCode()
+    + string ToString()
 }
 
-Class Couleur {
-    - int rouge
-    - int vert
-    - int bleu
-    + Couleur(int rouge,int vert,int bleu)
+class Album {
+    - string name
+    - string description
+    - string imageURL
+    - string information
+    + Album(string name, string file_Name, Artist artist, string description, string information)
+    + Album()
+    + void AddTitle(Title title)
+    + void RemoveTitle(Title title)
+    + boolean Equals(object obj)
+    + int GetHashCode()
+    + string ToString()
 }
 
-Oiseau --> "- /couleurAiles" Couleur
-OiseauTheque --> "-lesOiseaux *" Oiseau
+class Playlist {
+    - string name
+    - string description
+    - string imageURL
+    - int index = 0
+    + boolean shuffle = false
+    + boolean loop = false
+    + boolean looptitle = false
+    - List<int> played
+    + Playlist(string nom, string description, string imageURL)
+    + Playlist()
+    + void AddTitle(CustomTitle morceau)
+    + void RemoveTitle(CustomTitle morceau)
+    + void NextTitle()
+    + void PreviousTitle()
+    + Title? GetCurrentTitle()
+    + boolean Equals(object? obj)
+    + int GetHashCode()
+    + string ToString()
+    - int RandomGenerator(int n)
+}
+
+Album --> "+ artist" Artist
 @enduml
+