actually, my impression was that ‘karaoke” refers to a screen that actually gives yo uthe words of a song and the person then tries to sing it to the music (usually a recording). I would think that there is no need for a jewish “karaoke” as the lyrics (words) of jewish are well known, as they are mostly taken from the tefillos. In secular songs, they are composed anew and hence, the singer may not know them.
