public NoteLeaf(Tone tone, NoteLength length) { this.tone = tone; this.length = length; }
public NoteLeaf(NoteLength length) { this.tone = null; this.length = length; }
public NoteLeaf(Tone tone, NoteLength length) { this.tone = tone; this.length = length; }
public NoteLeaf(NoteLength length) { this.tone = null; this.length = length; }