Pearl Jam earns its fourth No. 1 on the Modern Rock chart as "Brother" rises from No. 4 to No. 1. With last week's leader, Incubus' "Love Hurts," ranking at No. 2, Epic claims back-to-back No. 1s and the top two spots for the first time in the chart's 20-year history . . . "Brother," one of six unreleased tracks from the March 24 reissue of Pearl Jam's debut album, "Ten," follows the band's previous No. 1s "Daughter" (1993), "Who You Are" (1996) and "World Wide Suicide" (2006).