Explain briefly why mosaics were a good artistic medium for conveying a spiritual message.

Mosaics were largely used to depict bible figures during the Byzantine Era. The subject is the liturgical equivalent of the Last Supper.Mosaics. Mosaic icon of the Virgin Episkepsis, Constantinople, late 13th century, glass, gold, and silver tesserae, Athens, Byzantine and Christian Museum.

Because of their complexity, mosaics were utilized as a good artistic medium for conveying a spiritual message.

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Trumpets, saxophone, trombone, flute, french horn  mostly in jazz or classic.  you can answer the rest thats on your own honestly 

It tends to reflect music trends rather than start them. hope that