diff --git a/Sources/justMUSIC/lib/model/Artist.dart b/Sources/justMUSIC/lib/model/Artist.dart
new file mode 100644
index 0000000..847ab48
--- /dev/null
+++ b/Sources/justMUSIC/lib/model/Artist.dart
@@ -0,0 +1,17 @@
+class Artist {
+  String _id;
+  String? _name;
+  String? _image;
+
+  Artist(this._id, this._name, this._image);
+
+  String? get id => _id;
+
+  String? get name => _name;
+
+  String? get image => _image;
+
+  set image(String? value) {
+    _image = value;
+  }
+}
diff --git a/Sources/justMUSIC/lib/model/Comment.dart b/Sources/justMUSIC/lib/model/Comment.dart
new file mode 100644
index 0000000..4c8d269
--- /dev/null
+++ b/Sources/justMUSIC/lib/model/Comment.dart
@@ -0,0 +1,24 @@
+class Comment {
+  final int _id;
+  String _text;
+  DateTime _date;
+  List<Comment> comments = [];
+
+  // Constructor
+  Comment(this._id, this._text, this._date);
+
+  // Getters and setters
+  int get id => _id;
+
+  String get text => _text;
+
+  set text(String value) {
+    _text = value;
+  }
+
+  DateTime get date => _date;
+
+  set date(DateTime value) {
+    _date = value;
+  }
+}
diff --git a/Sources/justMUSIC/lib/model/Music.dart b/Sources/justMUSIC/lib/model/Music.dart
new file mode 100644
index 0000000..ff3c685
--- /dev/null
+++ b/Sources/justMUSIC/lib/model/Music.dart
@@ -0,0 +1,47 @@
+import 'Artist.dart';
+
+class Music {
+  final String _id;
+  String? _title;
+  String? _cover;
+  String? _previewUrl;
+  DateTime? _date;
+  List<Artist> _artists;
+
+  // Constructor
+  Music(this._id, this._title, this._cover, this._previewUrl, this._date,
+      this._artists);
+
+  //Getters and setters
+  String? get id => _id;
+
+  String? get title => _title;
+
+  set title(String? value) {
+    _title = value;
+  }
+
+  String? get cover => _cover;
+
+  set cover(String? value) {
+    _cover = value;
+  }
+
+  String? get previewUrl => _previewUrl;
+
+  set previewUrl(String? value) {
+    _previewUrl = value;
+  }
+
+  DateTime? get date => _date;
+
+  set date(DateTime? value) {
+    _date = value;
+  }
+
+  List<Artist> get artists => _artists;
+
+  set artists(List<Artist> value) {
+    _artists = value;
+  }
+}
diff --git a/Sources/justMUSIC/lib/model/Post.dart b/Sources/justMUSIC/lib/model/Post.dart
new file mode 100644
index 0000000..0c248dd
--- /dev/null
+++ b/Sources/justMUSIC/lib/model/Post.dart
@@ -0,0 +1,55 @@
+class Post {
+  final int _id;
+  final int _idUser;
+  String? _description;
+  String _idMusic;
+  String _location;
+  int _nblikes;
+  String? _selfie;
+  DateTime _date;
+
+  // Constructor
+  Post(this._id, this._idUser, this._description, this._idMusic, this._location,
+      this._nblikes, this._selfie, this._date);
+
+  //Getters and setters
+  int get id => _id;
+
+  int get idUser => _idUser;
+
+  String? get description => _description;
+
+  set description(String? value) {
+    _description = value;
+  }
+
+  String get idMusic => _idMusic;
+
+  set idMusic(String value) {
+    _idMusic = value;
+  }
+
+  String get location => _location;
+
+  set location(String value) {
+    _location = value;
+  }
+
+  int get nblikes => _nblikes;
+
+  set nblikes(int value) {
+    _nblikes = value;
+  }
+
+  String? get selfie => _selfie;
+
+  set selfie(String? value) {
+    _selfie = value;
+  }
+
+  DateTime get date => _date;
+
+  set date(DateTime value) {
+    _date = value;
+  }
+}
diff --git a/Sources/justMUSIC/lib/model/User.dart b/Sources/justMUSIC/lib/model/User.dart
new file mode 100644
index 0000000..f9a7607
--- /dev/null
+++ b/Sources/justMUSIC/lib/model/User.dart
@@ -0,0 +1,38 @@
+class User {
+  final int _id;
+  String _pseudo;
+  String _country;
+  String _mail;
+  String _pp;
+  List<User> friends = [];
+
+  // Constructor
+  User(this._id, this._pseudo, this._country, this._mail, this._pp);
+
+  //Getters and setters
+  int get id => _id;
+
+  String get pseudo => _pseudo;
+
+  set pseudo(String value) {
+    _pseudo = value;
+  }
+
+  String get country => _country;
+
+  set country(String value) {
+    _country = value;
+  }
+
+  String get mail => _mail;
+
+  set mail(String value) {
+    _mail = value;
+  }
+
+  String get pp => _pp;
+
+  set pp(String value) {
+    _pp = value;
+  }
+}
diff --git a/Sources/justMUSIC/lib/view_model/CommentViewModel.dart b/Sources/justMUSIC/lib/view_model/CommentViewModel.dart
new file mode 100644
index 0000000..f4684e1
--- /dev/null
+++ b/Sources/justMUSIC/lib/view_model/CommentViewModel.dart
@@ -0,0 +1,8 @@
+import '../model/Comment.dart';
+
+class CommentViewModel {
+  // Methods
+  List<Comment> getCommentsPost(int idPost) {
+    throw new Error();
+  }
+}
diff --git a/Sources/justMUSIC/lib/view_model/MusicViewModel.dart b/Sources/justMUSIC/lib/view_model/MusicViewModel.dart
new file mode 100644
index 0000000..514155b
--- /dev/null
+++ b/Sources/justMUSIC/lib/view_model/MusicViewModel.dart
@@ -0,0 +1,96 @@
+import 'dart:convert';
+
+import 'package:justmusic/view_model/TokenSpotify.dart';
+import 'package:http/http.dart' as http;
+import '../model/Artist.dart';
+import '../model/Music.dart';
+
+class MusicViewModel {
+  final String API_URL = "https://api.spotify.com/v1";
+  late TokenSpotify _token;
+
+  MusicViewModel() {
+    _token = new TokenSpotify();
+  }
+
+  // Methods
+  Future<Music> getMusic(String id) async {
+    var accessToken = await _token.getAccessToken();
+    var response = await http.get(Uri.parse('$API_URL/tracks/$id'), headers: {
+      'Authorization': 'Bearer $accessToken',
+    });
+
+    if (response.statusCode == 200) {
+      final responseData = jsonDecode(response.body);
+      List<Artist> artists =
+          List<Artist>.from(responseData['artists'].map((artist) {
+        return Artist(artist['id'], artist['name'],'');
+      }));
+
+      return Music(
+          responseData['id'],
+          responseData['name'],
+          responseData['album']['images'][0]['url'],
+          responseData['preview_url'],
+          DateTime.parse(responseData['album']['release_date']),
+          artists);
+    } else {
+      throw Exception(
+          'Error retrieving music information : ${response.statusCode} ${response.reasonPhrase}');
+    }
+  }
+
+  List<Music> _getMusicsFromResponse(Map<String, dynamic> responseData) {
+    List<Music> musics = [];
+
+    List<dynamic> tracks = responseData['tracks']['items'];
+    for (var track in tracks) {
+      List<Artist> artists = List<Artist>.from(track['artists'].map((artist) {
+        return Artist(artist['id'], artist['name'],'');
+      }));
+
+      musics.add(Music(
+          track['id'],
+          track['name'],
+          track['album']['images'][0]['url'],
+          track['preview_url'],
+          DateTime.now(),
+          artists));
+    }
+
+    return musics;
+  }
+
+  Future<List<Music>> getMusicsWithName(String name, {int limit = 20, int offset = 0, String market = "FR"}) async {
+    var accessToken = await _token.getAccessToken();
+    var response = await http
+        .get(Uri.parse('$API_URL/search?q=track%3A$name&type=track&market=fr&limit=$limit&offset=$offset'), headers: {
+      'Authorization': 'Bearer $accessToken',
+    });
+
+    if (response.statusCode == 200) {
+      Map<String, dynamic> responseData = jsonDecode(response.body);
+      return _getMusicsFromResponse(responseData);
+    } else {
+      throw Exception(
+          'Error while retrieving music : ${response.statusCode} ${response.reasonPhrase}');
+    }
+  }
+
+  Future<List<Music>> getMusicsWithArtistName(String name, {int limit = 20, int offset = 0, String market = "FR"}) async {
+    var accessToken = await _token.getAccessToken();
+    var response = await http.get(
+        Uri.parse('$API_URL/search?q=artist%3A$name&type=track&market=fr&limit=$limit&offset=$offset'),
+        headers: {
+          'Authorization': 'Bearer $accessToken',
+        });
+
+    if (response.statusCode == 200) {
+      Map<String, dynamic> responseData = jsonDecode(response.body);
+      return _getMusicsFromResponse(responseData);
+    } else {
+      throw Exception(
+          'Error while retrieving music : ${response.statusCode} ${response.reasonPhrase}');
+    }
+  }
+}
diff --git a/Sources/justMUSIC/lib/view_model/PostViewModel.dart b/Sources/justMUSIC/lib/view_model/PostViewModel.dart
new file mode 100644
index 0000000..d1bcca3
--- /dev/null
+++ b/Sources/justMUSIC/lib/view_model/PostViewModel.dart
@@ -0,0 +1,31 @@
+import 'package:justmusic/model/Post.dart';
+
+class PostViewModel {
+  List<Post> _postsFriends = [];
+  List<Post> _bestPosts = [];
+
+  // Constructor
+  PostViewModel();
+
+  // Getters and setters
+  List<Post> get postsFriends => _postsFriends;
+
+  List<Post> get bestPosts => _bestPosts;
+
+  // Methods
+  List<Post> getPostsFriends() {
+    throw new Error();
+  }
+
+  List<Post> getMorePostsFriends() {
+    throw new Error();
+  }
+
+  List<Post> getBestPosts() {
+    throw new Error();
+  }
+
+  List<Post> getMoreBestPosts() {
+    throw new Error();
+  }
+}
diff --git a/Sources/justMUSIC/lib/view_model/TokenSpotify.dart b/Sources/justMUSIC/lib/view_model/TokenSpotify.dart
new file mode 100644
index 0000000..a221129
--- /dev/null
+++ b/Sources/justMUSIC/lib/view_model/TokenSpotify.dart
@@ -0,0 +1,45 @@
+import 'dart:convert';
+import 'package:http/http.dart' as http;
+
+class TokenSpotify {
+  final String clientId = 'd9b82921bbdf43efa15d0c34c28c6f93';
+  final String _clientSecret = 'ba01687f59ea4ab7ad00c769e89e44d8';
+  late String _accessToken;
+  late DateTime _tokenEnd;
+
+  TokenSpotify() {
+    _tokenEnd = DateTime.now().add(Duration(seconds: -10));
+  }
+
+  Future<String> getAccessToken() async {
+    if (_isTokenExpired()) {
+      await _refreshToken();
+    }
+    return _accessToken;
+  }
+
+  _refreshToken() async {
+    final basicAuth = base64Encode(utf8.encode('$clientId:$_clientSecret'));
+    final response = await http.post(
+      Uri.parse('https://accounts.spotify.com/api/token'),
+      headers: {
+        'Authorization': 'Basic $basicAuth',
+        'Content-Type': 'application/x-www-form-urlencoded',
+      },
+      body: 'grant_type=client_credentials',
+    );
+
+    if (response.statusCode == 200) {
+      final responseData = jsonDecode(response.body);
+      _accessToken = responseData['access_token'];
+      _tokenEnd =
+          DateTime.now().add(Duration(seconds: responseData['expires_in']));
+    } else {
+      print('Error refreshing token : ${response.statusCode}');
+    }
+  }
+
+  bool _isTokenExpired() {
+    return DateTime.now().isAfter(_tokenEnd);
+  }
+}
diff --git a/Sources/justMUSIC/lib/view_model/UserViewModel.dart b/Sources/justMUSIC/lib/view_model/UserViewModel.dart
new file mode 100644
index 0000000..bea7efd
--- /dev/null
+++ b/Sources/justMUSIC/lib/view_model/UserViewModel.dart
@@ -0,0 +1,13 @@
+import '../model/User.dart';
+
+class UserViewModel {
+  User? _userCurrent;
+
+  // Constructor
+  UserViewModel();
+
+  // Methods
+  User getUser(int id) {
+    throw new Error();
+  }
+}
diff --git a/Sources/justMUSIC/pubspec.yaml b/Sources/justMUSIC/pubspec.yaml
index 0be4218..c84080c 100644
--- a/Sources/justMUSIC/pubspec.yaml
+++ b/Sources/justMUSIC/pubspec.yaml
@@ -31,6 +31,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
+  http: ^0.13.5
 
 
   # The following adds the Cupertino Icons font to your application.
diff --git a/Sources/justMUSIC/test/Music_test.dart b/Sources/justMUSIC/test/Music_test.dart
new file mode 100644
index 0000000..eab5022
--- /dev/null
+++ b/Sources/justMUSIC/test/Music_test.dart
@@ -0,0 +1,36 @@
+import 'package:justmusic/model/Artist.dart';
+import 'package:justmusic/model/Music.dart';
+import 'package:justmusic/view_model/MusicViewModel.dart';
+
+Future<void> main() async {
+  MusicViewModel musicVM = new MusicViewModel();
+  Music m = await musicVM.getMusic('295SxdR1DqunCNwd0U767w');
+
+  print("id : ${m.id.toString()}, cover : ${m.cover}, title : ${m.title}");
+  print("date : ${m.date.toString()}, preview : ${m.previewUrl}");
+  for (Artist a in m.artists) {
+    print("id : ${a.id}, name : ${a.name}");
+  }
+
+  print('\nMusics :');
+
+  List<Music> musics = await musicVM.getMusicsWithName('Shavkat');
+  for (Music m in musics) {
+    print("id : ${m.id.toString()}, cover : ${m.cover}, title : ${m.title}");
+    print("date : ${m.date.toString()}, preview : ${m.previewUrl}");
+    for (Artist a in m.artists) {
+      print("id : ${a.id}, name : ${a.name}");
+    }
+  }
+
+  print('\nMusics With Artist:');
+
+  List<Music> musics2 = await musicVM.getMusicsWithArtistName('jul');
+  for (Music m in musics2) {
+    print("id : ${m.id.toString()}, cover : ${m.cover}, title : ${m.title}");
+    print("date : ${m.date.toString()}, preview : ${m.previewUrl}");
+    for (Artist a in m.artists) {
+      print("id : ${a.id}, name : ${a.name}");
+    }
+  }
+}