WAMU’s announcement that it will drop bluegrass music from its weekend schedule later this month and upgrade its HD Radio service prompted nearly three dozen listeners to post comments yesterday on DCist. A handful of listeners applauded the change: “I just don’t ‘get’ Bluegrass music. Waaay too twangy and countrified for me,” wrote one. But many others found reasons to object. The new Sunday afternoon news/talk line-up is “extraordinarily lame AND lazy,” wrote one listener. “This sucks. Bluegrass makes hangovers go away!” commented another. “I always liked WAMU weekends for the very reason that it wasn’t just like WAMU on the weekdays,” writes a fan of the Dick Spottswood Show and American Routes, Americana music programs to be dropped from WAMU’s flagship service.