use staff::midi::MidiSet;
use staff::{midi, Chord};
fn main() {
let mut keyboard = MidiSet::default();
keyboard.push(midi!(C, 4));
keyboard.push(midi!(E, 4));
keyboard.push(midi!(G, 4));
let chord = Chord::from_iter(keyboard);
println!("C E G is a {} chord", chord);
}