Universal Music has bought the entire back catalog of Bob Dylan's songs, the company announced Monday, describing the deal as "one of the most important" music publishing agreements of all time. "The deal covers 600 song copyrights including; "Blowin' In The Wind," "The Times They Are a-Changin'," "Like A Rolling Stone," "Lay Lady Lay," (and) "Forever Young," Universal Music said in a statement, giving no financial details of the purchase. cat/bgs/ec