"'KY not good enough any more, apparently. We have to have some other substance called Melisma."
K-Y Jelly is a water-based personal lubricant, first manufactured by an American company in 1904. Nowadays it is manufactured by Johnson & Johnson.
Melisma appears to be an imaginary product.
In music, melisma is the singing of one syllable of text over a series of successive notes. It is an effect often used in religious chants, as well as in popular music.