This scale is the seventh mode of the harmonic minor scale and is associated with a diminished 7th chord. As the name suggests, the scale has similar delusions of grandeur previously witnessed in the Superlocrian. As we previously saw, the intervals of Superlocrian scale are all flat (R b2 b3 b4 b5 b6 b7), but the Ultra Locrian goes one better. This time all those flattened notes remain, except the last note is a double flat 7th (R b2 b3 b4 b5 b6 bb7). The bb7 interval literally means the 7th has been flattened twice. The eventual note is essentially the same as a major 6th, but since it actually is the seventh note of the scale it is correct to call it a bb7.