Question

Here are several modern sources of music:

• an iPod
• television commercials
• the radio
. the soundtrack in a movie
.
background music played over speakers in a mall
What do all of these have in common?

Answer 1

you answer would be that they are all pre-recorded

Step-by-step explanation:

APE-X confirmed

Answer 2

They are all pre-recorder. Hope this helps :)