Most performing artists don't really have any idea how they do what they do, but out of 200 interviews thare should be a lot of interesting material in these:

http://www.loc.gov/today/pr/2012/12-117.html

"The list of noted artists and executives is a veritable who’s who in the music industry. They include Artie Shaw, Woody Herman, Ella Fitzgerald, Ray Charles, Barbra Streisand, Little Richard, Bob Dylan, Paul McCartney, George Harrison, Elton John, Paul Simon, David Bowie, Billy Joel, Sting, Tony Bennett, Joan Baez, James Taylor, Dick Clark, Tina Turner, Tom Jones, B.B. King, Quincy Jones, David Geffen, Mickey Hart, Harry Belafonte and many others. All types of popular music are represented—from rock ‘n’ roll, jazz, rhythm & blues and pop to big-band, heavy metal, folk and country-western."


"All of these men were good listeners; patient men."