By Pam Bullock | June 6, 2011 |

In the middle of a World Science Festival panel on Saturday night, the guitarist Pat Metheny took a sudden U-turn from the program he had planned. Instead of performing one of his innovative compositions, plucked from any of the phases of his career as a style-shifting jazz omnivore, Mr. Metheny, performing with the bassist Larry Grenadier, decided on the spot to play a jazz standard.

http://www.nytimes.com/2011/06/06/science/06wsfmusic.html?_r=1&ref=science