I added this entry to the Trombone History Timeline (15th century). Should you tip your trombonist? Apparently in the 15th century they did!
1461—Milan, Italy: Records show that Florentine ambassadors visiting Milan pay tips to eight “trombetti dello Illustrissimo Duca di Milano” and six “pifferi et uno trombone del signore Duca,” among others (Prizer, Music at the Court of the Sforza).