Pachelbel: Canon and Gigue in D major (Synthesized)
https://inv.nadeko.net/watch?v=mAslx3oCC5c

What does the word "Canon" mean then? A Canon (or Kanon) is a piece of music characterized by imitation and repetition. First one instrument or vocal introduces a part of the melody. Then, after a number of tones, a second instrument or vocal starts to repeat, or imitate, the first melody, playing the exact same tones, but with a time delay. More instruments or vocals may then be added, depending on the composer's wishes.