Charles H. Spurgeon on Psalms 81:2

TITLE. It is remarkable that as Psalm 80 treats of the church of God under the figure of a vine, so the present is entitled, "upon Gittith, "literally upon the winepress. Whether the expression was meant to refer to a musical instrument, or to some direction as to the tune, is uncertain. In our Saviour's adoption of the figure of a vineyard to represent his church, he speaks of a winepress dug in it, Mt 21:33. The idea refers itself to the final result in some sense, in a way of salvation of souls, as the same figure of a winepress is used in Revelation 16 of the final destruction of the ungodly. W. Wilson.

Timbrel. The toph, English version tabret, timbrel, LXX., tumpanon, once qalthrion. It was what would now be called a tambourine, being played by the hand; and was specially used by women. It is thrice mentioned in the Ps 81:2 Ps 149:3 150:4. Joseph Francis Thrupp.