ZZ Top drummer Frank Beard is taking a leave of absence due to an upcoming medical procedure. On Sunday, the band's official Instagram account announced that Beard, 75, will be stepping away from their Elevation Tour to tend to "a health issue.""Shelter Music Group, ZZ Top’s management, has announced the band’s drummer, Mr. Frank Beard, has temporarily stepped away from the current tour to attend a health issue requiring his focus in the near term," the message read.DUSTY HILL, ZZ TOP BASSIST, DEAD AT 72"Beard, along with fellow ZZ Top members Billy F Gibbons and Elwood Francis, presently on the Elevation