Here is the beautiful Cavatina from the film "The Deer Hunter" originally performed by John Williams.
Here's a piece from Grade 2 of the Trinity Guildhall syllabus which shows that a piece doesn't need to be particularly advanced to be beautiful and emotional.
September Heath - Martin Fogel
✓ Classical guitar requires more discipline to learn than other styles, however it can be a very rewarding journey.
✓ As part of my classical guitar lessons I can teach reading of standard music notation.
✓ If you would like to do grades, I have a strong knowledge of the Trinity Guildhall syllabus having achieved the highest grade (Grade 8).
Cavatina - Stanley Myers, John Williams