Throw your own Justin Bieber concert at home. Play along with three of Justin Bieber& x2019;s hits or create your own songs with the cool beat pad and effects slider. Make it your world. Two awesome play modes. Music Mode, keep the beat with Justin Bieber, Keyboard Mode write a symphony of your own. features. Mix song samples to create the ultimate Justin Bieber soundtrack. Jam to the music with a synthesizer that always makes you sound like a pro. Use the slider to add crazy effects to the music. Switch between the synthesizer and samples while the song plays. Turn on or off the vocals, drums or background music for a new sound.