NOTE In the Torah scroll, only the Hebrew letters (otiot) are written, in some cases with “crowns” (tagin) over them. The associated vowel signs (nekudot) and musical notes (taamim, the cantillation marks) although unwritten are also integral parts of the oral Torah tradition (the Masoret).The completeness and perfection of the letters depend on the musical notes, vowel points and crowns that are joined with them. All of them contribute, each in its own proper way, to the full and complete execution of the intended effect or action. However, the main action comes about through the letters.
Letters, Vowels, and Crowns as Hidden Layers of Torah
Kalach Pitchei Chokhmah 21:2