diff --git a/classes/Book.js b/classes/Book.js
index ee69d54..6e3feb9 100644
--- a/classes/Book.js
+++ b/classes/Book.js
@@ -1,6 +1,29 @@
 // import the Media class:
+const Media = require("./Media")
 
-// create your Book class:
+class Book extends Media {
+    constructor(title, year, genre, author, numPages, rating) {
+        super(title, year, genre);
+        this.author = author;
+        this.numPages = numPages;
+        this.rating = rating;
+    }
+
+    summary() {
+        return `Title: ${this.title}, Author: ${this.author}, Year: ${this.year}, Page Count: ${this.numPages}, Genre: ${this.genre}, Rating: ${this.rating}`
+    }
+
+    static highestRating(arr) {
+        return arr.sort((a , b) => b.rating - a.rating)[0]
+    }
+
+    static calculateAverageRating(arr) {
+
+        const arr_ratings = arr.map((book) => book.rating);
+        return (arr_ratings.reduce((acc, rating) => acc + rating), 0) / arr_ratings.length;
+    
+    }
+}
 
 // don't change below
 module.exports = Book;
diff --git a/classes/Media.js b/classes/Media.js
index d4d718b..d65283f 100644
--- a/classes/Media.js
+++ b/classes/Media.js
@@ -1,4 +1,22 @@
 // create your Media class:
 
+const { ALL_MEDIA } = require("./Media");
+
+class Media {
+    static ALL_MEDIA = [];
+    static totalMediaCount = 0;
+    constructor(title, year, genre) {
+        this.title = title;
+        this.year = year;
+        this.genre = genre;
+        ++Media.totalMediaCount; 
+        Media.ALL_MEDIA.push(this);
+    }
+
+    summary() {
+        return `Title: ${this.title}, Year: ${this.year}, Genre: ${this.genre}`;
+    }
+}
+
 // uncomment below to export it:
 module.exports = Media;
diff --git a/classes/Movie.js b/classes/Movie.js
index 484e7a3..45e580a 100644
--- a/classes/Movie.js
+++ b/classes/Movie.js
@@ -1,6 +1,25 @@
 // import the Media class:
-
+const Media = require("./Media")
 // create your Movie class:
+class Movie extends Media{
+    constructor(title, year, genre, director, duration, rating){
+        super(title, year, genre)
+        this.director = director;
+        this.rating = rating;
+        this.duration = duration
+
+    }
+    summary(){
+        return `Title: ${this.title}, Director: ${this.director}, Year: ${this.year}, Genre: ${this.genre}, Rating: ${this.rating}`
+    }
+    static longestMovie(arr){
+            return arr.reduce((max,current)=> (current.duration > max.duration ? current:max)) 
+    }
+
+    static calculateAverageRating(arr) {
 
+        return arr.reduce((acc, movie) => acc + movie.rating, 0) / arr.length;
+    }
+}
 // don't change below
 module.exports = Movie;
\ No newline at end of file
diff --git a/classes/Music.js b/classes/Music.js
index b97fe18..90469a5 100644
--- a/classes/Music.js
+++ b/classes/Music.js
@@ -1,6 +1,30 @@
-// import the Media class:
+const Media = require("./Media");
 
 // create your Music class:
 
+class Music extends Media {
+    constructor(title, year, genre, artist, length) {
+        super(title, year, genre);
+        this.artist = artist;
+        this.length = length;
+    }
+
+    summary() {
+        return `Title: ${this.title}, Artist: ${this.artist}, Year: ${this.year}, Genre: ${this.genre}, Length: ${this.length} seconds`;
+    }
+
+    static shortestAlbum(arr) {
+        let shortestAlbum = new Music();
+        shortestAlbum.length = 10000000;
+        for (let i = 0; i < arr.length; ++i) {
+            if (arr[i].length < shortestAlbum.length) shortestAlbum = arr[i];
+        }
+
+        return shortestAlbum;
+    }
+
+}
+
+
 // don't change below
 module.exports = Music;
diff --git a/classes/Podcast.js b/classes/Podcast.js
new file mode 100644
index 0000000..f3af6fb
--- /dev/null
+++ b/classes/Podcast.js
@@ -0,0 +1,16 @@
+const Music = require("./Music");
+
+class Podcast extends Music{
+    constructor(title, year, genre, artist, length, host,epsiodeName, episodeNumber, guests) {
+        super(title, year, genre, artist, length);
+        this.host = host;
+        this.epsiodeName = epsiodeName;
+        this.episodeNumber = episodeNumber;
+        this.guests = guests
+    }   
+    listen(){
+        return `${this.title} - Episode: ${this.epsiodeName}. Hosted by ${this.host} and featuring guests ${this.guests}. Length: ${this.length} seconds.`
+    }
+}
+
+module.exports = Podcast;
\ No newline at end of file
diff --git a/main.js b/main.js
index 102baa9..142bcae 100644
--- a/main.js
+++ b/main.js
@@ -1 +1,35 @@
-// Import classes here to console.log and debug
+const Media = require("./classes/Media");
+const Book = require("./classes/Book");
+const Movie = require("./classes/Movie");
+const Music = require("./classes/Music");
+const Podcast = require("./classes/Podcast");
+
+const movie1 = new Movie(
+    'Inception',
+    2010,
+    'Sci-Fi',
+    'Christopher Nolan',
+    148,
+    10
+  )
+  const movie2 = new Movie(
+    'Inception',
+    2010,
+    'Sci-Fi',
+    'Christopher Nolan',
+    148,
+    10
+  )
+  const movie3 = new Movie(
+    'Inception',
+    2010,
+    'Sci-Fi',
+    'Christopher Nolan',
+    148,
+    50
+  )
+
+const music1 = new Music('Lemonade', 2016, 'R&B', 'Beyonce', 3949)
+console.log(Media.ALL_MEDIA)
+
+