Pearl Jam 20th Anniversary at Alpine

A fan walks on a Pearl Jam designed floor covering while attending the band’s 20th anniversary tour at Alpine Valley in East Troy, Wisconsin, on Saturday, September 3, 2011. (Chris Sweda/ Chicago Tribune)

Chicago Tribune

July 19, 2013 1:21 PM PT

Pearl Jam performed for their 20th anniversary tour at Alpine Valley in East Troy, Wisconsin, September 3, 2011. Read Greg Kot’s review.

ct--pearl-jam-at-alpine-for-20th-anniversary-t-014

A group of Pearl Jam fans mimic the front album of Ten by Pearl Jam while visiting the Pearl Jam museum during the bands 20th anniversary tour at Alpine Valley in East Troy, Wisconsin, on Saturday, September 3, 2011. (Chris Sweda/ Chicago Tribune)

ct--pearl-jam-at-alpine-for-20th-anniversary-t-016

Pearl Jam frontman Eddie Vedder leads the group during their 20th anniversary tour at Alpine Valley in East Troy, Wisconsin, on Saturday, September 3, 2011. (Chris Sweda/ Chicago Tribune)

ct--pearl-jam-at-alpine-for-20th-anniversary-t-001

Pearl Jam frontman Eddie Vedder leads the group during their 20th anniversary tour at Alpine Valley in East Troy, Wisconsin, on Saturday, September 3, 2011. (Chris Sweda/ Chicago Tribune)

ct--pearl-jam-at-alpine-for-20th-anniversary-t-013

The Strokes open for Pearl Jam at Alpine Valley in East Troy, Wisconsin, during Pearl Jam’s 20th anniversary tour on Saturday, September 3, 2011. (Chris Sweda/ Chicago Tribune)

ct--pearl-jam-at-alpine-for-20th-anniversary-t-012

The Strokes open for Pearl Jam at Alpine Valley in East Troy, Wisconsin, during Pearl Jam’s 20th anniversary tour on Saturday, September 3, 2011. (Chris Sweda/ Chicago Tribune)

ct--pearl-jam-at-alpine-for-20th-anniversary-t-011

The Strokes open for Pearl Jam at Alpine Valley in East Troy, Wisconsin, during Pearl Jam’s 20th anniversary tour on Saturday, September 3, 2011. (Chris Sweda/ Chicago Tribune)

ct--pearl-jam-at-alpine-for-20th-anniversary-t-010

The Strokes open for Pearl Jam at Alpine Valley in East Troy, Wisconsin, during Pearl Jam’s 20th anniversary tour on Saturday, September 3, 2011. (Chris Sweda/ Chicago Tribune)