This is urgent!

2. compare and contrast the role of an mc and a dj. describe the role of each artist and the contributions they make to a musical performance. use specific terminology and techniques associated with mcing and djing.

MC or master of ceremonies has the job of introducing talent or the main event.
DJ or disc jockey has the job of introducing solely music and also takes part in mixing (of music).
There both control and manage the social energy of the audience. 
I don't know about terminology though.

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

Tan, an pearl. it's unique.