Thou Sweet and Lovely Wall

There is an opera (also a flute concerto) by JF Lampe which tells the story of Pyramus and Thisbe, as referenced in Midsummer Night's Dream. The opera includes an Air entitled "And Thou, Oh Wall" which itself contains the lyric I've used as a title and the following:

"Oh show me thy chink, that I may blink..."

I saw it at the Peacock Theatre very shortly …