It uses the Vocaloid technology to recreate Japanese lyrics. With your right hand you play the notes you wish the Vocaloid to sing and with the left hand you hit one of several letters. Depending on the combination of letters touched will depend on the pronounication spoken. Only a Japanese version has been made.
The product will not be made for sale commerically but will be offer to businesses interested in it. In the demos, VY1 can be heard singing.