Columbia subject headings:
Andriessen, Louis, 1939-2021--Manuscripts--Facsimiles.
Music--Manuscripts--Facsimiles.
Piano music.
Harvard subject headings:
Andriessen, Louis, 1939-2021--Manuscripts--Facsimiles.
Music--Manuscripts--Facsimiles.
Piano music
Princeton subject headings:
Andriessen, Louis, 1939---Manuscripts--Facsimiles.
Music--Manuscripts--Facsimiles.
Piano music.