Vogone reduced songs sound different on a Karaoke Player

[Elvis P]

I have a disc that was created with the MTU program. When I try to play it on my Pioneer Karaoke player on the normal settings, I can barely hear the music at all. However, when I hit the one touch button, the music plays with plenty of volume. Will I have a problem if I try to play this disc in a machine without the One Touch feature ??

In a similar vein, I have noticed that I have a similar problem with some CDG's that a re multiplexed like Sound Choice Power picks. I have to play them in the One Touch mode to hear the vocals on the disc. Is this a problem with my player ?