Should I learn trumpet trombone or clarinet

What is the purpose of the outer ear? a. to convert mechanical waves into electrical waves b. to evaluate the quality of sound c. to convert sound waves into mechanical waves d. to collect and focus sound waves

Which style of polyphony uses a borrowed chant and arranges several new melodies and texts above and unrelated to the chant?

What consists of electronic components that store instructions ready to be executed and the data needed by those instructions