| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a karaoke system which is capable of recommending a musical piece predicted to be a musical piece which will be preferably sung by a user though the user has never sung the musical piece or musical pieces sung by a singer of this musical piece. <P>SOLUTION: A karaoke system 1 recommends a musical piece suiting user's taste, to the user who has not sung much for a certain period. <P>COPYRIGHT: (C)2012,JPO&INPIT |
