Why is continuity important in films? what can filmmakers do to ensure continuity in their films?

"im only a crack in this castle of glass" what band says this in one of there songs its a project for school dont report. im doing a project on music and bands.

To make an etching the artist first coats the entire printing plate with an acid-resistant substance called a made from beeswax, asphalt, and other material. the artist then draws on the coated plate with an etching needle exposing the metal. next the plate is dipped in the plate is removed, the waxy coating removed, and the plate is cleaned, inked and printed.

Which of the following is not typical of medieval music? monophonic or polyphonic often not written down religious in nature mainly instrumental