test('be able to be inverted to first inversion when in drop2 format', () => {
    const chord = new ClosedChord(Pitch.C, ChordPattern.Major7, Duration.Quarter, Octave.C4);

    const expectedPitches = [Pitch.E, Pitch.B, Pitch.C, Pitch.G];
    expect(Array.from(chord.drop2().invert()).map((p) => p.Name)).toStrictEqual(