The making of Wilco's "Summerteeth" The making of Wilco's "Summerteeth": Looking to the past pointed the way to the future, explains bassist John Stirratt. Author: Feb 8, 2021 WILCO: (L-R) John Stirratt, Ken Coomer, Jeff Tweedy and Jay Bennett. Photo by Ken Weingart/Michael Ochs Archives/Getty Images. The making of Wilco's "Summerteeth": Looking to the past pointed the way to the future, explains bassist John Stirratt. Released in 1999 Wilco’s third album, Summerteeth, represented a turning point for the band. The first album from the group to sell in excess of 200,000 copies, Summerteeth — a musical departure from the band’s original alt-country origins — ended up on many publications’ best-of lists for that year.