Spock receives an audio-video suggestion of a Vulcan marriage drum.
The Vulcan wedding drum is a musical instrument from the planet Vulcan.
When the male crew of the USS Enterprise was under the spell of the female inhabitants of Taurus II, the ship received a signal from the planet. To Spock it was identified as the sound of a Vulcan marriage drum, followed by an audio-visual suggestion of a female playing a wedding drum. (TAS: "The Lorelei Signal")