Monument to the future

The Letters of Utrecht and the Milliongenerations:Letters project are intended as a monument to the future, but are local. Can we think of monuments with greater reach?

Below follows a brainstorm from Ruud van Nimwegen about the concept how to create a never-ending piece of music.

Why

Why are we doing this? What's the higher goal, our vision?

• Opportunity to shine very bright: for everyone it's possible to have a worldly stage, show it's talent and be proud to show friends and family their capabilities.
• Bring inspiration together, having fun in creating music: musicians inspire each other and get connected, based on their passion and shared musical vision.
• Music bringing opposing groups together: listeners will be surprised and touched by the variety of world music, their differences, and similarities. Although we might think different and have different ethical values, we also share the same things.
• .....

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Background, related efforts

• Longplayer is a one thousand year long musical composition conceived and composed by Jem Finer. It began playing at midnight on the 31st of December 1999 at the Lighthouse in Trinity Buoy Wharf, London, and intends to continue to play without repetition until the last moment of 2999, at which point it hopes to complete its cycle and begin again.
• John Cage planned his composition ORGAN2/ASLSP (as slow as possible) to last 639 years. A performance in Halberstadt Germany was begun in 2001.
• Danny Hillis' 10,000 year clock in the mountain built by the LongNow Foundation
• Greg Blonder's TiWalkMe Escapement, a Ten Thousand Year Forest - Timepiece
• Painter Roman Opalka documented time in his details 1965 / 1 – ∞, stating "the fundamental basis of my work, to which I have dedicated my life, manifests itself in a process of recording a progression that both documents time and also defines it."
• In Personal Structures artists work around space, time and existence. Their 2009 essay draws on Martin Heidegger's Being and Time.
• Alicia Eggert created pieces dealing with time, including Eternity and Between Now And Then
• Daniel Mullen painted a series called Future monuments including a painting called Monument to the future
• On Kawara's Time series and One million years read eg, at the Stedelijk Museum in Amsterdam.
• Joseph Beuys' social sculpture 7000 Eichen (7000 oaks) has a temporal element. It was initiated at 1982 at documenta 7, completed in 1987 and since 2003 maintained by a foundation. DIA has an introduction.
• Time Buoys issued a call For Designs That Promote Long-Term Thinking to trigger long-term thinking in public spaces by promoting and disseminating physical reminders that will remain present for millenia, but the site has gone offline.
• The Letters of Utrecht