Canon EOS 6D Mark II Instruction Manual page 426

3 Slide Show (Auto Playback)
Selecting the Background Music
If you use EOS Utility (EOS software, p.594) to copy background music
tracks to the card, you can play the background music together with the
slide show.
At the time of purchase, the camera does not have background music.
For the procedure to save (copy) the background music tracks to a card,
refer to the EOS Utility Instruction Manual (p.596).
To delete the background music tracks saved on the card, press the
<L> button in step 2.
426
Select [Background music].
1
Set [Background music] to [On],
then press <0>.
If the card has no background music,
you cannot perform step 2.
Select the background music.
2
Press the <W> <X> keys to select
the desired background music.
To listen to a sample of a background
music track, press the <B>
button. During playback, press the
<W> <X> keys to play another
background music track. Press the
<B> again to stop playing the
background music track.
Adjust the sound volume by turning
the <6> dial.
Select a background music track and
press <0> to add a checkmark [X].
You can also select multiple
background music tracks.
The checkmarked [X] background
music will be played for the slide show.