It's what musicians call a canon: multiple parts or voices (3 in this case) playing the same music but starting at different times. A round like "Row, Row, Row Your Boat" is a special kind of canon in which each voice starts over when it gets to the end, so that the piece goes on and on till you decide to stop. A regular canon has each voice running through the music just once.
The music of a canon has to be composed so that its different sections sound well together when played simultaneously by the various voices. That's why all the phrases in Pachelbel's Canon in D Major are the same length and have the same harmony. The accompaniment plays its harmonic underpinning over and over, while the upper voices play the melody, staggered by the length of a phrase. If we represent the phrases of the Canon in D Major by the letters A B C D etc., then we can represent what the three upper parts are up to this way:
1. A.... B.... C.... D.... E.... F.... G.... etc.
2. ...... A.... B.... C.... D.... E.... F.... etc.
3. ............. A.... B.... C.... D.... E.... etc
(Ignore the dots. They're just there to keep the letters spaced correctly on this page.)
it was written for his love for music and it was based on his childhood
Pachelbel's Canon (Canon in D Major by Johann Pachelbel)
Look up "Canon in D major for violins" in a serach engine.
IMSLP.org
Johann Pachelbel's Canon in D major is used very often for wedding processional music.
The chords for "Canon in D" by Pachelbel are D major, A major, B minor, F minor, G major, and G minor.
The chords for Pachelbel's Canon in D are D major, A major, B minor, F minor, G major, and G minor.
The chord progression for "Canon in D" by Pachelbel follows a pattern of D major, A major, B minor, F minor, G major, D major, G major, and A major.
it was written for his love for music and it was based on his childhood
The chord progressions for "Canon in D" by Johann Pachelbel follow a simple pattern of D major, A major, B minor, F minor, G major, D major, G major, and A major.
There are reasonably good keyboard versions of the Canon in D.
Pachelbel's Canon (Canon in D Major by Johann Pachelbel)
Look up "Canon in D major for violins" in a serach engine.
IMSLP.org
Johann Pachelbel's Canon in D major is used very often for wedding processional music.
D major, A major, B minor, F# minor, G major, D major, G major, A Major (repeat over again)
Visit the following link for different versions of Pachelbel's Canon in D major.