@Work{OL16769781W,
    title: {Bach's testament},
    author: {Zoltán Göncz},
    first_publish_year: {2013}
}

@Work{OL1965675W,
    title: {J. S. Bach's  Well-Tempered Clavier},
    author: {Siglind Bruhn},
    first_publish_year: {1993}
}

@Work{OL1965674W,
    title: {The musical order of the world},
    author: {Siglind Bruhn},
    first_publish_year: {2005}
}

@Work{OL2912083W,
    title: {Die Kunst der Fuge},
    author: {Johann Sebastian Bach},
    first_publish_year: {1750}
}

@Work{OL10684725W,
    title: {The Art of Fugue},
    author: {Gustav M. Leonhardt},
    first_publish_year: {1952}
}

@Author{OL4460001A,
    name: {Gustav M. Leonhardt},
}