Music embodies an unchanging harmony, while rites represent unalterable reason. It is permanent, unalterable, and eternal, and is present in every possible world. He created indelible ink and unalterable bond paper with his printing company. The former is founded on unalterable nucleus, the latter is in principle evolutionary. Early horns had unalterable lengths and permanently attached mouthpieces. Because the alphabet stemmed from the Quran, it was considered unalterable. The palette positions and sizes were unalterable, as was the document window. The couac is considered unalterable flour, resistant to insects and moisture.