This is a follow-up to one of the first attempts I ever uploaded to the app; that one was titled "The Muro Box story" honoring all efforts and time spent by the Muro Box team developping the Muro Box N20 and the time and effort they spent in making the app accessible for me as a blind person.
This newly uploaded melody titled "The Muro Box N40 story" honors the development of the Muro Box N40 and the continued friendlyness, warmth and passion of the team throughout the years I am communicating with them, not to forget the moment I had the chance to meet them personally in Namur on October 26, 2025. At the time of this upload, it is October 26, 2026 and so it is the right moment for this I guess.

As with "The Muro Box story", this follow-up also couples together some melodies the team used to test and demo their iterations of the N40 at the time they were developping it. Those melodies include:
- Mozart's "Eine kleine nachtmusik": this actually is not part of the N40 development, but since it was the melody sparking this whole Muro Box adventure, I couldn't resist to include a short snipet anyway. If you want to find out more about this told by the founders themselves, please refer to: https://murobox.com/en/our-story/why-we-invented-muro-box/
- "Twinkle, twinkle little star": the Muro Box team used this melody when looking for the shape of the resonance box for the N40. For this one, they used the body of an acoustic guitar to hear what that would sound like. For more details from the founders, please refer to: https://murobox.com/en/our-story/murobox-n40-journey/muro-box-n40-update-6-en/ I play this one in the version I was teached as a kid; that version is titled "Altijd is Kortjakje ziek" (which translates to "Kortjakje is always ill";
- - Grand father's clock: this melody has been used a couple of times throughout the N40 development journey. The most important moment to me is when the team was exploring the note range for the N40. More details can be found here: https://murobox.com/en/our-story/murobox-n40-journey/muro-box-n40-update-8-en/ The version I play here is based on a Dutch translation by Dutch singer Bob Scholte released somewhere in the 1930s I think;
- - "Antique Sublime Harmony Music Box by Paillard, c. 1885": I actually don't know which melody has been played here, but when the team learned about sublime harmony during the N40 development journey thanks to the expertise of Siegfried, they had this video of an antique sublime harmony music box as an example to show off what sublime harmony is all about. Refer to: https://murobox.com/en/our-story/murobox-n40-journey/muro-box-n40-update-8-en/ I tried to carefully listen to what the music box actually played here to recreate the melody onto the Muro Box N40, hoping I did a kind of reasonable job 🙂
- - Chopin's "Valse du petit chien": by applying a detune effect varying the number of cents, the team used this melody to explore which number of cents sounded the best for use in the N40 Sublime. For more details, refer to: https://murobox.com/en/our-story/murobox-n40-journey/muro-box-n40-update-8-en/ Again, I tried to recreate the melody onto the Muro Box N40 the best I could, knowing I am no (classical) musician at all 🙂
- - "Muro Box-N40 | Let's Preview the First N40 Sublime Prototype!": so, no further explanation required as for what this melody stands for in this context. I actually don't know which melody the team used here, but since this definitely was a huge milestone, I absolutely wanted it to be in here anyway. If you'd like to read more details about this milestone, please visit: https://murobox.com/en/our-story/murobox-n40-journey/muro-box-n40-update-9-en/ So again, I tried my best to recreate it here 🙂
- - Beethoven's "Sonata nr 5 opus 24": this melody was used to demo the N40's capability to connect to a MIDI keyboard or laptop. It is featured here: https://murobox.com/en/our-story/murobox-n40-journey/muro-box-n40-update-9-en/ And once again: I am no (classical) musician, so my version played here certainly deviates from the original as composed by Beethoven;
- - "All is found" (Frozen 2) followed by "Castle in the sky" (theme song): these melodies both were used to compare the sound of different kinds of resonance boxes for the N40 model. You can read all about it here: https://murobox.com/en/our-story/murobox-n40-journey/muro-box-n40-update-14-en/ and https://murobox.com/en/our-story/murobox-n40-journey/muro-box-n40-update-15-en/
- "Let it be" by The Beatles: this melody was used in an article explaining some handy software and methods to help creating beautiful melodies for the then newly developped N40 Standard and N40 Sublime models. If you wish to read this article, please refer to: https://murobox.com/en/how-to-unleash-your-creativity-in-arranging-music-box-melodies-en/
- - "Hekens' Serenade": the team used this melody to demo their newly developped combs comparing them to the previous ones. The related demo video can be found at: https://youtu.be/5nIl9H4Id_g?is=FjyMZyWxOdBN76Aw
Once again, I want to express my gratitude to the whole Muro Box team for developping such beautiful N40 models and being such warm, friendly and passionate people. Take this little medley as my personal little gesture to tell you I really appreciate all of this!