VTech Super Sound Karaoke Instruction Manual page 11

10. Mode Button
When playing music from a microSD card,
press this button to toggle shuffle and
repeat functions.
Press this button during other activities to
quit the activity.
11. Back Button, Play/Pause/OK Button
and Next Button
Press these buttons to select and control
songs and activities.
12. Voice Magic Button
Press this button to reduce or remove
the main vocal track of the song you're
listening to.
Note: This feature is not available during
Line-in mode.
This feature may not work with every
song, but works best for studio recorded songs.
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