Function dominant_seventh_to_major_submediant 

pub fn dominant_seventh_to_major_submediant(
    possibility: &[Pitch],
    info: Option<&ChordInfo>,
) -> Result<Vec<Pitch>>

Resolves a dominant seventh in root position deceptively, to the major submediant: music21’s dominantSeventhToMajorSubmediant.

Errors

A possibility that is no dominant seventh in root position, when info is not given.