Across Clues:
1 Post 2nd world war, Holland contributed to renowned American pop art artist. (6)
5 Fashion each system to peter out? (4,4)
9 Chinese copy a princess who left the conference (8)
10 Solicit an English book on murder (6)
11 Durham area tree pruner turned distributor (12)
13 Which US actor was secretly a Pulitzer Prize winning composer? (4)
14 Secretly mark the period after the South American empire (2,6)
17 American composer George Bambino, swallowing a mushy wad? (8)
18 Identify the first Lincoln autograph? (4)
20 Multiple academy award winning composer for best original song, living in heart of Siberia with rare disorder (6,6)
23 Stylist and multiple Pulitzer Prize winning composer (6)
24 Air purifiers say, built with unlimited number of 1s and 0s (8)
25 I would point about the French inaction (8)
26 Baroque era English composer with island in river (6)
Down Clues:
2 Classical era English composer appears in peculiar news (4)
3 Liberal in disguise, said to be guardian saint and a German composer (9)
4 Hungarian-Austrian avant-garde composer appears in local show, I wish, I will I get invited (6)
5 English composer who was sent to Florida and craftily decried the Asian flu risk (9,6)
6 Fast and muscular German composer Albert (8)
7 English composer of early Tudor period and half of Bond's iconic car (5)
8 Serving in an unreturnable manner, admitting to breaking court furnishing? (10)
12 City near Houston, TX (not GA), welcoming the AO and OBE award winner and Australian composer (10)
15 City in Lombardy region of Italy with an island, accommodating socially acceptable sound of snoring for their very own Baroque era composer (9)
16 Spew lament about an odd signor (8)
19 Fountainhead of Russian classical music with an associate in Georgia (6)
21 Invest initially in International mineral business with superior energy (5)
22 Franco-Flemish composer of return to neo-tropical sound (4)