Tantaene animis celestibus irae! / DM.

Caption continues: Late, late, too late; the guests depart, and, oh distressful thing! Two celebrated vocalists have not been asked to sing! From distant corners, darting swift, they rush to reach the pianner, and meet upon the music-stool in this unseemly manner! An instrumental gentleman, facetiously inclined, doth stick and stand and stare at 'em, and thus he speaks his mind: "The tenor and the baritone are fighting for the crown; I'd like to kick the baritone, and knock the tenor down!"
Title from published caption.
Proof of a wood engraving after an illustration by Du Maurier for Punch, Feb. 29, 1868, p. 92.