I know there's nothing new under the Talkbass sun, but I remember years ago playing in the pit for a small theatrical production. So one night the drummer tells me his friend will be playing keyboards because the regular was out - uh...huh... 
1. the guy HAD to play bass with his left hand
2. the guy did not know any of the songs
3. the guy HAD to play bass with his left hand
4. the guy was clearly out of his depth regardless
5. the guy HAD to play bass with his left hand
I near killed him that night his inaccurate clashing with me was so bad, and naturally the keyboard was way louder - made it sound like I was fumbling around!
After two songs I told him to just stop. Luckily there were recorded tracks for the performers to use. I felt aweful - this was a public event - people were paying to see this.
I hate it when keys players lead themselves with the left hand - I never did get far with it but imho that's a poor way to learn, probably I guess the result of necessity. Fine on their own but disaster with a bassist.

1. the guy HAD to play bass with his left hand

2. the guy did not know any of the songs
3. the guy HAD to play bass with his left hand

4. the guy was clearly out of his depth regardless
5. the guy HAD to play bass with his left hand

I near killed him that night his inaccurate clashing with me was so bad, and naturally the keyboard was way louder - made it sound like I was fumbling around!
I hate it when keys players lead themselves with the left hand - I never did get far with it but imho that's a poor way to learn, probably I guess the result of necessity. Fine on their own but disaster with a bassist.
my parole came through 