Chord question

[bluebeat]

Hi fellows.
In "Song chords"
What is 1+8 and 1+5 refers to?
Can somebody please let me know.
Thank you.

[v.muller]

1+8 means octave only, for example notes C4 + C5
1+5 means quint only, (chord without third) for example C4 + G4

See this: https://en.wikipedia.org/wiki/Power_chord

[bluebeat]

v.muller,
Thank you for solving mystery! (I do not believe this is in the manual)

Best regards,
Misha.

[v.muller]

This is standard chord types.
Yamaha keyboards know them as well.