21 UNILS
Guido d'Arezzo contributed to the development of:
O
A. musical instruments.
O
B. musical notation.
O
O
C. direct psalmody.
D. time signatures.
hSMIT

Ithink its the same as usual

Band the next question i do not know

For #1 i believe the answer would be d. because it is hard to perfect thatfor #3 i believe the answer would be b. because latin root meaning round  for #6 i believe the answer would be a. because it is a jewish thing

When an orchestra plays at a concert they might play a symphony (a piece for orchestra) and they might play a concerto (with a soloist). if the solo instrument is a violin the piece is called a “violin concerto”, if it is a piano it is called a “piano concerto”, etc.