Editing Niggun L'chatchila Ariber (section)

=== Second Bava ===
The nickname "Eins Tzvei Drei Fir" is named after the "square" notes, having four consistent identical sounds. This musical "square" expresses the boundary, the framework of creation, the order of hishtalshelus (chain of worlds). This consistent sound is the lowest sound in the scale of the niggun, expressing the "bottom" of the niggun — the same bottom from which they leaped and fled in the opening of the first bava.