What a performance! It's this decorator's material! (7,4)

I haven't cracked this one yet — but the brilliant team at Times for the Times have:

The best I can do with this is to go via MASK as masquerade, a form of drama involving dance and music. Take it as a verb, and record it and you get a form of performance preserved as a masking tape. Something tells me I’m missing something obvious. Please be kind! George/GLH has indeed been kind: see the first comment below. So foul and fair a clue I have not seen…