Morton Feldman Past Performances Summary (10 September 1999 - 17 April 2016)

The total number of concerts listed on the Past Performances page from 10 September 1999 to 17 April 2016 = 1675. Though this listing is certainly not complete, hopefully it is enough for the results below to have some significance.
Which Feldman works are most performed? (Works with 25 or more performances listed.)
Rothko Chapel107
The Viola in My Life 299
Palais de Mari90
Neither86
Triadic Memories78
Why Patterns?66
Crippled Symmetry65
The Viola in My Life 160
String Quartet 255
Samuel Beckett, Words and Music54
For Frank O'Hara53
For Philip Guston53
For Bunita Marcus49
Madame Press Died Last Week at Ninety45
Patterns in a Chromatic Field45
The King of Denmark41
Three Voices41
The Viola in My Life 339
For Samuel Beckett38
I Met Heine on the Rue Furstenberg38
Piano and String Quartet31
Instruments 127
Where is Feldman most performed? (Countries with 25 or more concerts listed.)
Germany411
USA348
UK195
Austria95
Netherlands89
Switzerland80
France66
Italy54
Spain49
Belgium44
Canada32
Czech Republic28