Backing Tracks.
1-No matter how many times you play them they do not change.
2-I cannot invent or doing what I am feeling—I must follow.
3-They are good for a sing-a-long.
4-The more I do, the less it sounds like a keyboard.

I met Backing tracks when an OMB played at my wife’s place of employment. He faked playing the piano --- he strummed the guitar, but the hand position did not match the song

BUT! When he played the lines dances, he ran to the dance floor danced with them. They loved him.
What a price to pay to succeed.

Keep in mind, these are my opinions, John C.