An electronic music speaker, amplifier or sound system.

Speaker

A person sitting down, with his computer and headphones, participating in an online class, watching a movie or listening to music.

Person With Laptop And Headphones

A graphic symbol of an atom with two electrons.

A round retro vinyl or a CD with a hole in the middle to play music. 

Some science-related screen content with elements such as shapes and an electron.

A busy and overworked manager or employee surrounded by charts, graphs, and notifications.