A history of a rock star

"I was at lunch the other day with some coworkers at a place called 'Nearly Normal's' in Corvallis, OR (which is where the Oregon State University is located). I was wearing my shirt from the 2010 tour of AIC, and a man and his wife stopped by our table and they started looking at me. The man politely asked me: "Sorry, we realized your shirt. Do you like that band, or is just a shirt? "
I said, "Alice in Chains is my favorite band and has been for a long time."
He said: "Good, I have a little story for you if you do not mind."

So this guy tells me that about 10 years ago or a little more, he and his son being in downtown Corvallis, near the ocean, his son was riding his bike spinning even with training wheels. There was a guitarist sitting on a bench in the park playing an acoustic guitar. The boy stopped riding his bike to listen. Then he got off his bike and walked over and sat right in front of the guitarrist.

The guitarist told the boy: it not better ride your bike? You don't want to sit here and listen to me, right? "
The boy said: "No, I want to hear you play"
The guitarist says, "OK. What do you want to hear?"
"What you were playing"
The father (again, the guy who told me this story) was listening and said: 

"Wow, you're good!"
The guitarist said: "Thanks. Is Something I did"
The father says, "You mean professionally? Like you're in a band?"
"Yes"
"Oh, then you play in Peacock (A small bar in Corvallis) and places like that?"
"No. It would be fun, but we would have security problems there"

The father was thinking ... well, get kicked out of the bar or something. So he asked:

 "What do you mean by security problems?"
The guitarist says, "Oh, well, we have exhausted the Superdome and stuff like that."
"Oh, so you're great at what you do then huh?"
"Yes, I guess I could say that."
"What is the name of the band you are?
"Alice in Chains".

The father had no idea what it is Alice in Chains, then he would have a conversation with Jerry Cantrell as to who are Alice in Chains, how is your music and things like that. Jerry told him about what he was pressured by the record company and about Layne, who had re-entered rehabilitation. Jerry started playing again for the child and the father began to think

"Wow, what is making a big rock star sitting on a bench in a park in Corvallis," then he asked:

"Wait a minute, you're a pretty big rock star, what are you doing here in Corvallis sitting on a bench playing your guitar?"

Jerry replied, "Oh, I'm just waiting for my brother appears. He is a professor at OSU (Oregon State University)"

The father told me he was very impressed with how easy and pleasant to be Jerry. I was really surprised that a rock star, you were sitting there and playing his guitar for any child and have a talk with your father. "