A round in music can be an example of many things. It is most likely that a round is the best example of a stylistic form.
a round
canon in music is where you are playing a piece of music and the last note makes you repeat what you have just done.
Canon Rock - music - was created on 2005-12-05.
Pachelbel's Canon (Canon in D Major by Johann Pachelbel)
Blues music and stomp
Pachelbel's Canon sheet music can be found for free online and is downloadable as a PDF. Sites such as 8 Notes, Free Score, and Music Notes all offer Pachelbel's Canon as a free download.
IMSLP.org
round
Pachelbel, Canon in D
IMSLP.org
Pachelbel's Cannon, or Canon in D, by Pachelbel is a piece of music written by Pachelbel. IT can be obtain from a music store selling Classical Music CDs or off iTunes or from Amazon.