This font is inspired in a previous one created by Wim Crouwel (and rescued by igorrossi for our pleasure here at FS, please see http://fontstruct.com/fontstructions/show/219585). Presenting his recreation of the font, igorrossi said there: "A second contribution to the Crouwel's fonts replicas. This one was also inspired by a poster, for an exhibition at the Van Abbemuseum in Eindhoven (picture in the comments section). I thought it had never been reproduced before, until I came across edgar fernhout by funk_king. Next time I'll search on Fonstruct before I start a new font but, well, we have both good taste... I take the opportunity to thank the fonstructors who introduced me to Crouwel's work."
Well, in a "piano font" way, this is my little own contribution to the myth. Hope you like it.

@four, @p2pnut: Thanks for your comments and support, my friends. It was very difficult to do something different and preserve the original style and cute sense of this font.