Why am I getting error message "cannot access SongBook"?

I have followed the video for Building the Model for the karaoke project. This is the first step. I have watched the video a few times but cannot find my error. I coded along with the video in the work space.

The error I keep getting is

Karaoke.java:2: error: cannot access SongBook
import com.teamtreehouse.model.SongBook;
^
bad source file: ./com/teamtreehouse/model/SongBook.java
file does not contain class com.teamtreehouse.model.SongBook
Please remove or make sure it appears in the correct subdirectory of the sourcepath.

I will paste my code below

Song.java

package com.teamtreehouse.model;

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

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

public String getTitle() { return mTitle; }

public String getArtist() { return mArtist; }

public String getVideoUrl() { return mVideoUrl; }

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

SongBook.java

package com.teamtreehoouse.model;

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

public class SongBook { private List<Song> mSongs;

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

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

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

}

Karaoke.java

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=T2PAkPp0_bY"); SongBook songBook = new SongBook(); System.out.printf("Adding %s %n", song); songBook.addSong(song); System.out.printf("There are %d songs. %n", songBook.getSongCount()); } }