De Klerk was the organist at St. Joseph’s Church in Haarlem, playing there the Adema organ from the time he was 16 until his death. As the organist of the city of Haarlem, he performed at least 6,400 times, playing a multitude of improvisations. De Klerk was self-taught as a composer.
for: Women's choir (SSA), piano
Score
Item no.: 612157
Harmonia-Mixed Choir
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 1117592
for: Voice (soprano)
Einzelstimme
Item no.: 904000
for: Bass Voice
Einzelstimme
Item no.: 913399
for: Voice (tenor)
Einzelstimme
Item no.: 931738
Harmonia-Mixed Choir
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 906503
for: Women's choir (SSA), piano
Einzelstimme
Item no.: 915768
Harmonia-Mixed Choir
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 908464
for: Alto Voice
Einzelstimme
Item no.: 910768
for: Women's choir (SSA), piano
Einzelstimme
Item no.: 911207
Harmonia-Mixed Choir
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 910839
Harmonia-Mixed Choir
for: Mixed choir (SAB); piano ad lib.
Choir score
Item no.: 931820
Harmonia-Mixed Choir
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 923664
Harmonia-Mixed Choir
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 908637
Harmonia-Mixed Choir
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 326066
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 910763
Harmonia-Mixed Choir
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 907825
Harmonia-Men's Choir
for: Male choir (TTBB), piano
Einzelstimme
Item no.: 906187
Harmonia-Mixed Choir
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 931252
Harmonia-Mixed Choir
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 925955
Harmonia-Men's Choir
for: Male choir (TTBB), piano
Einzelstimme
Item no.: 904911
Harmonia-Men's Choir
for: Male choir (TTBB), piano
Einzelstimme
Item no.: 906209
Harmonia-Mixed Choir
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 915390
Harmonia-Men's Choir
for: Male choir (TTBB), piano
Einzelstimme
Item no.: 931498
Harmonia-Mixed Choir
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 912391
Harmonia-Mixed Choir
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 931696
Harmonia-Mixed Choir
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 907891
for: Organ
Music score
Item no.: 1025165
for: Organ
Music score
Item no.: 276177
Harmonia-Men's Choir
for: Male choir (TTBB), piano
Einzelstimme
Item no.: 909982
Harmonia-Womens Choir
for: Women's choir (SA), piano
Einzelstimme
Item no.: 913860
Harmonia-Womens Choir
for: Women's choir (SSA), piano
Einzelstimme
Item no.: 910467
Harmonia-Womens Choir
for: Women's choir (SSA), piano
Einzelstimme
Item no.: 909688
Harmonia-Mixed Choir
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 915427
Harmonia-Mixed Choir
for: Mixed choir (SATB), piano
Einzelstimme
Item no.: 910108
for: Mixed choir (SATB); piano ad lib.
Choir score
Item no.: 374056
voor orgel
for: Organ
Music score
Item no.: 678748
Hommage à Sweelinck
for: Organ
Music score
Item no.: 796956
for: für Oboe(Violine) und Basso continuo (Cembalo,Fagott ad libitum)
Item no.: 113574
for: Mixed choir (SATB), organ
Choir score
Item no.: 923672
Item no.: 611002
for: Organ
Music score
Item no.: 1214372
Pedaaloefenigen, duos en trios voor orgel
for: Organ
Music lesson book
Item no.: 611001
for: Flute, oboe, organ
Score, Parts
Item no.: 611000
für Mezzosopran, Männerchor und Orgel
for: Soloist (bass), male choir (TTBB), organ
Score
Item no.: 661779