Can someone explain to me what this lady meant by this?

[Richmondbread]

When I was a young teenager I was playing some songs for the old folks at a nursing home.

The activities director asked the one of the old ladies if she wanted to get up and dance to it . "You can't dance to this, she said. "He's playing one thing, and singing another".
Does this mean I was off key? Because even back then, I was never an off key singer. Perhaps she didn't like my arrangements? I learned later that she had played at Carnegie Hall once. Perhaps she was jealous of a much younger talent? I don't know. It did kind of discourage me, because I heard every word she said. But I kept on with my music anyway.

[de Burgh II]

She thought your performance was uncoordinated/dichotomous.

Hence the saying, 'You can't dance to this, [she said] [sic]. "He's playing one thing, and singing another'.

[Colonel Frank Grimes]

Two options

1. You should have stopped in the middle of the song and said, "Do we have a problem here? Cuz if we have a problem, I can solve it." If she said no, you keep playing. If she said yes and got mouthy you flip over your keyboard and bum rush her. Let her know what's up...

2. You should have asked her afterwards how she felt about the music and why and that as a young artist you were open to constructive criticism.

[Richmondbread]

She thought your performance was uncoordinated/dichotomous.

Hence the saying, 'You can't dance to this, [she said] [sic]. "He's playing one thing, and singing another'.

But even as I have improved a lot since then, I know for a fact that I wasn't playing one thing and singing another. I have heard people who can't play piano and sing at the same time. I was playing accompaniment and singing the melody. Even back then, I could play floridly and cohesively. That is why I am puzzled by the statement.

[Richmondbread]

Two options

1. You should have stopped in the middle of the song and said, "Do we have a problem here? Cuz if we have a problem, I can solve it." If she said no, you keep playing. If she said yes and got mouthy you flip over your keyboard and bum rush her. Let her know what's up...

2. You should have asked her afterwards how she felt about the music and why and that as a young artist you were open to constructive criticism.

I found out later from the Activities Director that the lady could no longer play the piano from arthritis. I wonder if she was bitter about me being a young person and playing an instrument, whilst she couldn't.