Quick clues

ACROSS

1 Set of three; chord (5) 4 Brass instrument (10) 9 Small room (6) 14 Prepared state (9) 15 At all times of day or night (5,3,5) 16 Painting on two panels (7) 17 Machinery fixer (9) 18 Opening passage (5) 19 Popular Suppé overture (4,3,7) 22 Totally absorb the attention of (7) 25 Fit to be sold (10) 27 Customary, mainstream (12) 30 Letting contract (5) 31 Sicken (8) 32 Clairvoyants (8) 35 Speculate (8) 36 Capital of Finland (8) 37 Happening at great speed (5) 39 Young Frenchwoman (12) 41 Not too intellectually stretching (10) 43 Soft Italian cheese (7) 45 Prior inclination (towards something) (14) 48 Small woody plant (5) 49 Mental powers (9) 51 Aircraft with double wings (7) 53 Having a disappointing ending (13) 54 Army rank (9) 55 Vicar, rector (6) 56 Store at a very low temperature (4-6) 57 Eat steadily; artist (5

DOWN

1 Long angry harangue (6) 2 Not suitable (13) 3 Ornamental mat for plate (5) 4 (Of wind) become stronger and colder (7) 5 Without principles (12) 6 Continental (8) 7 Beautiful young woman (5) 8 Saving (10) 10 Absent, deficient (7) 11 Type of cattle (9) 12 Capital of Japan (5) 13 Have a rethink (6,4,4) 20 Out of that place (9) 21 Abandonment of belief (8) 23 Spacecraft’s landing at sea (10) 24 Unimportant person (5-5) 26 Remarkable year (5,9) 28 Wrong (9) 29 Military waking signal (8) 33 Act of pretending to be another (13) 34 Not possible to deny (12) 38 Cause to continue indefinitely (10) 40 Painter, wallpaper hanger (9) 42 Exhaust quietener (8) 44 Smoker’s leaf (7) 46 Exalted, lofty (7) 47 Scarcity, lack (6) 48 Bog, marsh (5) 50 Pause, temporary respite (3-2) 52 Sacred song (5)