George Harrison wrote the song. He died in 2001. 
In 2004, his son Dhani got together with some rock legends to do a tribute performance of George’s song, “While My Guitar Gently Weeps.” 

You will notice Prince standing off to the side for the first half, then he steps to center stage at about 3:20 and takes over the show with a display of guitar artistry that is illegal in 7 states and under investigation in 12 more.

Karen Robin says, “This was Prince’s response to being snubbed by Rolling Stone Magazine’s top 100 guitarists. He certainly proved his point here.”

“And the strutting off stage at the end: Priceless.”