Added score to 2013 tutorial. Level 5. @1:22 LH should be Bb/Eb/Ab. Thanks to solair conan who found error! https://sites.google.com/site/pianoandmathtutorials/chopin-s-nocturnes Jane, a retired university math teacher, started this volunteer project in April 2009. Positive feedback from wonderful viewers worldwide keeps her motivated. Jane is a strong advocate of reading music. She made unconventional sight-reading lessons that simplifies reading music. https://sites.google.com/site/pianoandmathtutorials/sight-reading-lessons