How do I turn on audio visualizer?

0:021:13How to enable the Audio Visualizer on YouTube? (and other HTML5 …YouTubeStart of suggested clipEnd of suggested clipThen in the turn off the lights options page click on the tab advanced options and scroll down untilMoreThen in the turn off the lights options page click on the tab advanced options and scroll down until you see the topic video toolbar next enable the checkbox to show the video toolbar.