To contact Eduard de Boer directly, you can send an e-mail to hallo[at]eduarddeboer.org.*
To contact Opus 33 Music, please send an e-mail to hallo[at]opus33music.org.*
For purchase of sheet music other than is (currently) available in the Shop, please send an e-mail to bestelling[at]opus33music.com. *
For (inquiries about) commissions, you can send an e-mail to opdracht[at]eduarddeboer.org. Please take into account that there may be a waiting list.
*) Replace [at] by @. This is to prevent spam. For the same reason, prefixes like info@ or order@ have been avoided.
For all of the above, you can also make use of this contact form: