I’m always writing and composing songs and instrumental tracks and sometimes I get an idea for a riff or lead line that is hard. To record it I’ll play a bar at a time or so and edit it all together. Well, when it comes time to perform it live, I sometimes have to dumb it down to pull it off. On really tricky parts even lots of practice doesn’t help. And I sometimes forget how I played a part and just wind up playing something that fits. It got me to thinking if this ever happens to pros. Just board and thinking out loud.