Function minstrel::guess_keys

pub fn guess_keys(notes: Vec<Note>, root_note: Option<Note>) -> Vec<Key>

Guesses keys that the given collection of notes could belong to.

Examples

use minstrel::{Key, Mode, Note};

let notes = vec![
    Note::new(0), // C
    Note::new(2), // D
    Note::new(4), // E
    Note::new(7), // G
    Note::new(11), // B
];

assert_eq!(minstrel::guess_keys(notes.clone(), None).len(), 14);

// Specifying that the key must start on a certain note (C in this case)
// significantly reduces the number of possible keys
assert_eq!(minstrel::guess_keys(notes, Some(Note::new(0))).len(), 2);