Opening bars of Beethoven's Piano Sonata in E minor, Op. 90, composer's manuscript
<bdi><a href="https://en.wikipedia.org/wiki/en:Ludwig_van_Beethoven" class="extiw" title="w:en:Ludwig van Beethoven"><span title="German composer (1770–1827)">Ludwig van Beethoven</span></a>
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Autograph manuscript, <a rel="nofollow" class="external free" href="http://imslp.org/wiki/Piano_Sonata_No.27,_Op.90_%28Beethoven,_Ludwig_van%29">http://imslp.org/wiki/Piano_Sonata_No.27,_Op.90_%28Beethoven,_Ludwig_van%29</a>