The Nickelodeon Dora the Explorer Digital Music Player and Sound Book: Super Sing-Along book enables children to sing along to 20 songs using a toy digital MP3 player that comes with the book. The sound book is designed for children ages 3 years and older.Each two-page spread in the book contains lyrics for four songs. Each set of lyrics is marked with an illustration that matches an icon on the digital MP3 player. To play a song, children move the wheel on the toy MP3 player to locate the matching icon on the LCD screen. As the song plays, they sing along and watch the animated icon move to the music. The MP3 player has Play, Shuffle, and Stop buttons. The Shuffle button plays three songs at random. The MP3 player is loaded with these 20 songs:Travel SongIn the Crystal Kingdom What Must a Butterfly's Dream Be?All Things Bright and BeautifulThe MermaidTo and FroFloat SongBeautiful SeaHere We Go RoundSilently Falling SnowWhich Way Does the Wind Blow?Pretty Flying PegasusMerrily, MerrilyFiddle-De-DeePrincess, Where Have You Been?Lavender s BlueDid You Ever See a Dancer?Waltz SongI've Been DancingWe Did It!The Nickelodeon Dora the Explorer Digital Music Player and Sound Book: Super Sing-Along book has coated board pages that withstand rough handling. The book conforms to the toy safety requirements of ASTM F963-08. Three replaceable AAA batteries that power the MP3 player are included.