@libraz/libcantus - v1.1.0
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    Variable DOUBLE_HARMONIC_MASKConst

    DOUBLE_HARMONIC_MASK: number = ...

    The heptatonic set with two augmented seconds: offsets {0,1,4,5,7,8,11}.

    Maqam Hijazkar in Arabic practice, thaat Bhairav in Hindustani practice, and the double harmonic major scale in English-language scale lists — one pitch-class set that three traditions arrived at separately and treat differently.