Hi FemmeNoire,
4d - 3 letter "perform" surrounded by/"wearing" a 4 letter old word for "hat".
6d - 5 letter word for "shows impatience" around a 5 letter "tramp" (as a verb) - definition is what you do when you "don't know the score".
20a - 2 letter "street" followed by 6 letter "caused irritation" - definition is "what sewer did".