I like very much Damon Brand books they work well so I could stop here and say to myself " use whatever works and that’s it" but here I have a problem. Damon Brand says that his source come from the Shorshei Ha-shemoth. How it is possible ? The Shorshei Ha-shemoth is not at all about the famous 72 angels as this is not traditional jewish mysticism but they come from later christian kabbalah. I dont say to no evoke these Angels - I use this magick myself - but I dont understand why Damon Brand speaks about this great jewish text who is about a whole different system. Here some explanations from a book quoted below ( with some modifications to give better understanding about what I try to explain):
The Shem Ha-Meforash, or the 72 Explicit Names of God, is a most important subject of Jewish Mysticism.Nowadays, Shem Ha-Meforash refers to the 72 Angels. However according to the most ancient source the Shem Ha-Meforash is not 72 Angels but a system composed of 72 sequences of three hebrew letters and it is said to have the power to overcome the laws of nature in all its forms. . Each letter of a Trinitarian root generates and nourishes 3 Angels by root, one Angel by letter that composes the name, which does not make 72 angels, but 72 x 3 = 216 Angels. These sequences act as a trigger for specific spiritual frequencies on the different states of consciousness that’s why great kabbalist like Abraham Aboulafia worked on these sequences to attain illumination.
To understand the true Shem Ha-Meforash you can read comments in your language ( if available) from the famous Shorshei Ha-Shemoth, the Root of Names, by Moses Zacuto, and the teachings of Rabbi Moshe Cordovero.
However I dont say that 72 Angels doesnt exist but from original tradition there is no 72 Angels as they come from later developments and influence from christian kabbalah.
For me Damon Brand has done a mistake if he quotes Shorshei Ha-Shemoth as source for his system of magick as it is a whole different things or I dont have understood something. So if you have any information or clarifications please let me know.