The German generally begins with l'avant trois double, which may be generally described thus: the leader, having performed the tour de valse with his partner, leaves her, and brings forward two other ladies; his lady brings forward two other gentlemen; the two trios place themselves opposite each other, then forward and back, and each gentleman with the lady in front of him performs a tour de valse.
"Manners and Social Usages"
Mrs. John M. E. W. Sherwood
Forster entered into an agreement with him for the English copyright of his compositions, and between 1781 and 1787 he published eighty-two symphonies, twenty-four quartets, twenty-four solos, duets and trios, and the "Seven Last Words," of which we have yet to speak.
"Haydn"
J. Cuthbert Hadden
As late as July trios like this may sometimes be seen.
"Wild Life in a Southern County"
Richard Jefferies