Who was the producer of the studio album that was supported by Pearl Jam's Vs. Tour?
Vs. Tour: The Vs. Tour was a concert tour by the American rock band Pearl Jam to support its second album, "Vs." Vs. (Pearl Jam album): Vs. is the second studio album by American rock band Pearl Jam, released on October 19, 1993 through Epic Records. Vs. (Pearl Jam album):  It was the band's first collaboration with producer Brendan O'Brien, and their first album with drummer Dave Abbruzzese.
Brendan O'Brien