"Abendempfindung an Laura", K. 523, is a song by Wolfgang Amadeus Mozart dated 24 June 1787 in Vienna, written at the time of the opera Don Giovanni and Eine kleine Nachtmusik.
The title translates as "Evening Sentiment". The poet is unknown, but scholars speculate the text may be written by Joachim Heinrich Campe. The song is in a melancholy mood, with the singer reviewing his failed romantic relationship and the inevitability of death.
Mozart's longest song, lasting 110 bars, is in the time signature of in alla breve and in the key of F major. The varying music moods, wide ranging tonal scheme and contemplation of sadness are reminiscent of Schubert. The composer is in an unusually restrained and contemplative mood. A typical performance lasts around 5 minutes.