Vanguard Records  is an American record label set up in 1950 by brothers Maynard and Seymour Solomon in New York.  It started as a classical label, but is perhaps best known for its catalogue of recordings by a number of pivotal jazz, folk, and blues musicians.  The Bach Guild was a subsidiary label.  The label was acquired by Concord Bicycle Music in April 2015.  (More from Wikipedia)