Hey all,

I have a problem with my Yamaha Piaggero NP V80. In the midst of playing riffs or songs, a note-that I haven't touched- will sound- loud - . It's appears to be in the same 'key' I'm in, although not exactly sure on that.

An example would be: I'm playing a song in c major and out of nowhere I hear a LOUD G sound out, even though I haven't struck
a G key..

Anyone help me with this?