Another technique for the lyra viol was the ornament or grace known as the "thump", where the player plucks the open strings with the fingers of the left hand. This may have been the forerunner of the technique of plucking the sympathetic strings on the baryton. The viol may also have sometimes been held in the lap and played lute-style. The first reference to this practice is in Tobias Hume's "The First Part of Ayres" (1605), which was written a number of years before Claudio Monteverdi's "Combattimento di Tancredi e Clorinda" (1624) which is frequently cited as the earliest source of pizzicato. Hume's work also discusses playing col legno on the lyra viol.