According to the Internet source given below, Claude Balbastre was a French organist and composer. He was organist at the Chapelle Royale where he performed his own works at Christmas, as did his colleagues, Louis Claude Daquin
and Jean-François Dandrieu
. It is reported that the improvisations by Balbastre at Christmas attracted so many people, it was feared disorder would be caused in the church, to the point where he was twice refused access to the organ loft at Notre-Dame Cathedral during midnight mass, by order of the Archbishop of Paris.