What served as a portable musical staff that could easily be carried into rehearsals for the monastic choir?

Antonio Vivaldi spent many years as director of music at __________

a) a Venetian orphanage for girls b) St. Mark's Basilica in Venice c) St. Peter's Cathedral in Rome d) a Florentine academy

What is aspect ratio most closely associated with?

a. color b. resolution c. shape d. luminance