Yamaha PortableGrand DGX-670 Owner's Manual page 11

Lesson features with Score display
The Lesson features are a fun way to learn and master Songs, with
notation shown on the display. For example, when you practice the
right-hand part, the playback of the left part and other parts will wait
for you to play the notes correctly. This allows you to practice melodies
and phrases smoothly—even if you are a beginner.
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Sing along with Song playback or your own performance
Since a microphone can be connected to this instrument and Song
lyrics can be shown on the display, you can enjoy singing along with
your keyboard performance or along with Song playback. Moreover,
you can apply various effects such as chorus to your singing voice. You
can also cancel the vocal part on audio recordings, letting you sing
along with (or instead of!) your favorite artists and groups, and enjoy
performing even more.
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Playing back the audio data wirelessly—Bluetooth Audio function
The audio data in a Bluetooth-equipped device such as a smartphone
can be played back through the DGX-670's built-in speakers. You can
enjoy playing or singing along with the audio data, or simply listening to
your favorite music.
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*Depending on the country in which you purchased the product, the instrument may not have Bluetooth capability.
Want to learn more about the DGX-670's
features?
Press the [DEMO] button and start the
demonstration!
To stop the demonstration, press the [EXIT] button
located at right of the display.
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DGX-670 Owner's Manual