The Hirajoshi is our first of three Minor scales, and is a Japanese pentatonic ... concludes with an E minor figure that outlines the minor/major 7th tonality of the I chord.

and this can be combined with the E minor pentatonic scale (E-G-A-B-D) to create one big hybrid scale. Furthermore, the chromatic tones can be used to link the notes of the E7 chord (E-G#-B-D ...