Since around 2017 the Terpstra keyboard, now named the Lumatone keyboard is being made by Dyan Horvath in Toronto. At the moment Siemen Terpstra is making efforts to get a fair percentage of the profit for his design. Also there is a disagreement about copyright. He has made the design between 1980 and 1990.

In this context, crowdfunding has been started to enable a legal assessment. Siemen Terpstra does not have much money. For this reason we made crowdfunding in the form of a gift.

We hope to get support from everybody who bought a Lumatone Keyboard and/or anyone who wants to help. Every euro is a help to us. Also we want to make it clear how many Lumatones have been made till now. So if you have one we would like to hear of it. You can send an email directly to Siemen: info@siementerpstra.com

We have a bank account for this: NL88ABNA 0418 8618 54. The BIC/SWIFT code is: ABNANL2A on the name: S. Terpstra.