Let me give you an example. We say that the musical notes, vowels, crowns and letters correspond respectively to the four expansions of AV, SaG, MaH and BaN. This is not to say that they themselves actually come from there, for if that were so, various teachings, particularly in the works of Rabbi Shimon bar Yochai, would be completely contradictory and could only be reconciled with a forced solution.
The main thing to understand is that there are four kinds of arrangements or institutions (תיקונים, tikkunim, lit. “repairs”). The letters are the actual lights of the government of Zeir and Nukva, which emerge from Imma. As to the vowels and the crowns: through the crowns (which are attached to the letters and written in the Torah scroll), Imma hovers over the letters as a source that remains attached to them even after their emergence.
And through the vowels, Imma governs the letters, for the vowels govern the letters. The musical notes are institutions that come for the sake of complete government from the side of Chochmah (Abba). Once things are divided up in this division, they are immediately bound together under the order of the four expansions of the Name, as discussed above.