import of classes fails

package com.teamtreehouse.model;

import java.util.ArrayList;
import java.util.List;

public class SongBook {
  private List<Song> mSongs;

  public SongBook() {
  mSong = new ArrayList<Song>();
  }

  public void addSong(Song song) {
    mSongs.add(song); 
  }

  public in getSongCount() {
    return mSongs.size(); 
  }
}

package com.teamtreehouse.model;

public class Song {
  private String mArtist;
  private String mTitle;
  private String mVideoUrl;

  public Song(String artist, String title, String videoUrl) {
    mArtist = artist;
    mTitle = title;
    mVideoUrl = videoUrl
  }

  public String getTitle() {
   return mTitle; 
  }

  public String getArtist() {
   return mArtist; 
  }

  public String getVideoUrl() {
   return videoUrl; 
  }


  @Override
  public String toString(){
   return String.formate("Song: %s by %s", mTitle, mArtist); 
    }

}

import com.teamtreehouse.model.Song;
import com.teamtreehouse.model.SongBook;

public class Karaoke {
  public static void main(String[] args){
     Song song = new Song(
       "Michael Jackson",
       "Beat It",
       "https://www.youtube.com/watch?v=SaEC9i9Q0vk");
    SongBook songBook = new SongBook();
    System.out.printf("adding %s %n", song);
    songBook.addSong(song);
    System.out.printf("There are %d songs. %n", songBook.getSongCount());
  }
}