Roland KR107 Owner's Manual page 42

Chapter 1 Performance
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Adding Harmonies to a Specified Part (Music Files)
When you sing while playing back a specified part from song data, harmony is
added based on pitches of the specified part.
1.
Select the song to which you want to add harmony.
To select a song stored in external memory, connect the external memory to the
external memory port.
2.
Touch <Music Files> in Step 2 of "How to select Vocal Effect" (p. 37).
fig.d-vo-music.eps_60
3.
Touch the icon for the part to which you want to add harmony.
When you play back the song and sing into the microphone, harmonies are added
using the pitches of the specified part.
4.
Touch <Variety>.
When <Variety> is ON, the melody played on the keyboard is played as the
harmony. The harmony added is matched to the pitch.
Cancelling the Effect
5.
Touch the icon you selected in Step 3 again.
The Music Files function is cancelled.
Press the [Exit] button to go back to the Vocal Effects screen.
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