Question How can I sequence emission or glow in the timeline

Ok I want to sequence glowing light or materials in the timeline to music. I know you can turn off and on a light in the timeline but lights aren’t working for me. I need to turn off and on a material with emission. Something that glows. I have a piano keyboard and I would like to light up the keys. The lights tell you which notes to play. I need to sequence this to music so I’d like to do it in the timeline to create an animation.

is there any way I can do this? Or does anyone have any ideas on how I can get my light up keyboard animation working?