$28.00 Barbie Voice Changing Rockstar Boombox-Any girl can be a rock star with the voice changing rock star boom box. Featuring big sound and a sing-along microphone that will have girls strutting their stuff like superstars. Girls can add echo or change their voice to sound deep, high-pitched like a chipmunk or even like a robot. Connect an MP3 Player (not included) and girls can perform anything from their own playlists. Sing to built-in music . Sing to anything from your own playlist via the MP3 line-in jack. Fun voice-changing effect lets girls' voices sound deep, high-pitched like a chipmunk or like a robot. Cheering/applause, comments from barbie and vocal music balance. Rock out with the included microphone, add a second microphone (not included) to sing duets with friends