1: Pinker and harder to find (5)
4: Shock with exclamations while mounting horse (9)
8: Capital - a Schubert composition (9)
9: Silent, cat backs away from it (5)
11: Snob detaining listener? Flee! (4,3)
13: I am to beat urge (7)
15: Help found in Adelaide. (3)
16: Certain European in age-worn convertible (9)
18: Traded partners for sprint ~ (5,4)
19: Worthless even when recycled (3)
20: Jenny adopted Bill (it's subject to change) (7)
22: Settler rearranged alphabet components (7)
24: Private dinner starts late (5)
25: Conductor of opera rising in encore (9)
27: In the wee hours, come together sideways (9)
28: Uneven ships cable made from hemp (5)