Question about U2 collaborations

[U2girl]

(this will probably apply to older fans)

U2 has worked with BB King, Bob Dylan, Johnny Cash, has written songs for Roy Orbison, Willie Nelson, Tina Turner, and Bono sung with Frank Sinatra.

So...are there any interviews from those people how they felt on working with U2? How they felt about U2 in general?

 

[Utoo]

I want to say that Bill Flanagan's 'U2 At The End Of The World' has a few lines from Dylan in it....but it's been a while since I've read it & I'm not certain.