Answer:
Whistling , Humming, Brass band music ----------Monophonic
Guitar pleving, Acapella singing, Orchestral music ------- Polyphonic
Step-by-step explanation:
Whistling , Humming, Brass band music are Monophonic while on the other hand, Guitar pleving, Acapella singing, Orchestral music are Polyphonic in nature. Monophony means music with a single "part" or a single vocal melody, whereas Polyphony means music with more than one part, and so this indicates more number of notes done at the same time so both are different on the basis of number of notes.