let view = MusicStaffView()

let root = MusicPitch(name: .g, accidental: .natural, octave: 3)
let scale = try! MusicScale(root: root, mode: .melodicMinor, direction: .up)
let notes = scale.map { MusicNote(pitch: $0, rhythm: (arc4random() % 2) == 0 ? .quarter : .half) }

view.elements = [MusicClef.treble] + notes + [MusicStaffViewBarLine.final]