They are '' Flower of Scotland , '' sung mostly at rugby and soccer matches ; '' Highland Cathedral , '' written by two Germans and chosen by Madonna as her wedding march when she married Guy Ritchie in Scotland ; two songs with words written by Robert Burns , '' Scots Wha Ha'e '' and '' A Man 's a Man for a ' That '' ; and '' Scotland the Brave , '' a traditional bagpipe tune with words written in the 1950 's .