Pianist David Allen Wehr, Artistic Director of Duquesne University's "Brahms on the Bluff" series, talks about the "other" version of Brahms's "Haydn Variations," and America's "go-to" hornist for the Horn Trio, launching the series's "Final Four" season on Sunday, 9/23/2007 at 3:00 pm at PNC Recital Hall.