What scales did Jason becker use in the song altitudes?

Answer 1

Altitudes is in they key of b minor , and in the rhythm guitar parts he is playing 5th power chords , what this means is that there is not third degree of this chord which takes away the major or minor interval in the chord which allows you to play in either major , minor or harmonic minor . So at the start of the track Jason is playing in b harmonic minor and then in the more faster picking parts switches between b minor and b harmonic minor and because there isn't any third degree in the chords hes playing to back the lead guitar , it works for him to play in any one of those scales . Jason also uses some exotic scales for example the hirajoshi scale although im not sure of the theory behind that .