08. Vertical Thoughts 4 Album: Morton Feldman - Piano - Philip ThomasArtist: Morton Feldman Listen and download
19. Vertical Thoughts 4 For Piano 1963 Album: Morton Feldman - All Piano - John TilburyArtist: Morton Feldman Listen and download
Vertical Thoughts 1 (1963) Album: Two Pianos And Other Pieces, 1953-1969 (CD1)Artist: Morton Feldman Listen and download
Feldman - Vertical Thoughts 4 Album: Panorama Of American Piano Music (CD3)Artist: Yvar Mikhashoff Listen and download