<https://secure.gravatar.com/avatar/3e421e71d78b9bb9e9fcffa73a425f2d?s=96&amp;d=mm&amp;r=g>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://bandmag.com/how-to/how-to-save-a-life-piano-chords/>