The composition itself is not, but a particular performance may be. You can look around for a peformance that's under a loose license, or maybe just make one yourself.
Pachelbel's Canon (Canon in D Major by Johann Pachelbel)
it was written for his love for music and it was based on his childhood
IMSLP.org
Look up "Canon in D major for violins" in a serach engine.
Johann Pachelbel's Canon in D major is used very often for wedding processional music.
Pachelbel's Canon (Canon in D Major by Johann Pachelbel)
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.
it was written for his love for music and it was based on his childhood
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.
There are reasonably good keyboard versions of the Canon in D.
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.
IMSLP.org
In the US, it's the Register of Copyrights. Most countries have a copyright office associated with the national library.
Look up "Canon in D major for violins" in a serach engine.
Johann Pachelbel's Canon in D major is used very often for wedding processional music.
Yes, they are part of a major corporation and they would be protected.