2163: Muscle

Six unclued lights (one hyphened) suggest words each differently formed from the same 13 22, which appears as a clued light and must be shaded.#
 

Across

 
1    Common choir dressed in black and white (11)
11    Thing every elder has about yellow waistcoat (6)
15    Message in letter about this month in Paris? (5)
16    Bard’s encounter in narrow passage (5)
17    Trumpet introduces king and queen – I lie in wait (6)
18    Posh man in warship (5, hyphened)
20    Pothead strong individual curbed (6)
21    Morose and without doubt lacking in energy (5)
27    African ruler hid a misguided prophet (7)
29    Tons o’ bananas beasts of burden humped (5)
30    Answer back to rebut archaic magistrate (6)
32    Pole with blade admits she sculpted statuette (5)
34    Famous film star not in love with a woolly creature (6)
36    VIP died an old lady (5)
37    Not rambling in Battersea (5)
38    European wearing extra smart top (7)
39    Aberdonian lass on English pony? (6)
41    Dire party hostess vetoes round dances (11)
 

Down

 
1    Perhaps porter unhappily quit Mallorca (not California) (10, two words)
2    Bird not quite sound keeps dithering (8)
3    Ships conquistador has to inspect (9)
4    The other hairnet Holly lost (12, four words)
7    Athletic Edmund’s injured lifting Henry VIII? (5)
8    Jade starts to lunch: enormous feast (4)
9    African roaming fringes of Italy and UK twice (6)
10    Live Jamaican music upset justices (5)
12    Young offspring bored by lecturer run off (6)
14    Ominous feeling because earl’s entombed alive (12)
21    Fine head’s humility (9)
23    Cop examines fruitcakes (8)
24    Tie Gaultier fashioned (8)
25    Kitty’s less uptight (6)
28    Authoress just docked poet’s boat (6)
31    Record old chestnut’s age (5)
33    Hooter of Delilah … (5)
35    … organ’s somewhat noticeable (4)
 
A first prize of £30 for the first correct solution opened on 9 June. There are two runners-up prizes of £20. (UK solvers can choose to receive the latest edition of the Chambers Dictionary instead of cash— ring the word ‘Dictionary’.) Entries to: Crossword 2163, The Spectator, 22 Old Queen Street, London SW1H 9HP. Please allow six weeks for prize delivery.