According to the Internet source given below, Benedictus Appenzeller was a Franco-Flemish singer and composer of the Renaissance, active in Bruges and Brussels. He served Dowager Queen Mary of Hungary for much of his career, and was a prolific composer of vocal music, both sacred and secular.
Appenzeller wrote six masses which have survived, as well as numerous motets and Magnificat settings. He also left over 40 chansons, many of which were published in Antwerp in a 1542 collection, Des chansons a quattre parties
. The twenty-four chansons in this collection have been published as Benedictus Appenzeller: Chansons
||Biography by wikipedia.org.