Concert videos from out of the past continue to materialize on the internet. Recent emanations include several pieces from a 1964 appearance in Belgium by the classic Dave Brubeck Quartet. The excellent picture and sound quality and the absence of applause suggest that the performances were in a television broadcast. Over the next few days, we will bring you several of the clips, beginning with “Three to Get Ready.” It has a couple of rough edges, but with a band that had this much fun, who cares? Here is an unexpected bit of living history with Brubeck, Paul Desmond, Gene Wright and Joe Morello. Desmond’s “Auld Lang Syne” gag was still fresh enough to amuse his co-conspirators.