Question: what are the five characteristics of gregorian chant?
Answer: Harmony. Monophonic in texture, so have no harmony. ... 
Rhythm. No precise rhythm, notes may be held for a duration of short or long, but no complex rhythms are used.
Form. Some Gregorian chants tend to be in ternary form. ... 
Texture. Gregorian chants are one of the few pieces of music that are entirely monophonic. ... 
Medium.