Since lyrics started to be captioned along with the song by a singer in a TV music show, a karaoke version of some of the songs was made to be included in his CD.
テレビの歌番組で歌手の歌に合わせて歌詞の字幕スーパーも放映するようになって以後、楽曲によってはそのCD自体にカラオケが付属するようにもなった。