A few years ago a fellow bass player and friend of mine died very suddenly. He played in a country band, (I am more of a rocker).
Went to his funeral on Friday afternoon, and played my bass through his rig Friday and Saturday night. I only knew a few tunes the band played, and everything seemed to be in a different key. I spent the entire weekend staring at the guitar players left hand.
It wasn't a great performance, and I learned to respect country music. All in all, the gig got done, the bar was happy, the band got paid, and I got a good feeling by helping Ron fulfill some of his final obligations.
So do you know I-IV-V now? Interestingly, I'm going to be playing with some guys this weekend whose bass player, Ron, died of a brain tumor a few years ago.

