Would you mind decreasing your volume a bit please..?
Less One Block
Yeah, of course. Most of the people will just use the volume key on their laptop (F4 or worst, F3). It results in your one block of sound bar disappear.
Lower A Bit
Actually you can do better than that. I mean, you can decrease your sound less than one block. Initially, I will just open my Apple ▸ System Preferences… ▸ Sound and lower the output volume down a bit.
Less a Quarter
But I’m not quite satisfied with the trouble it takes to do that. Fortunately, it can be easily done by pressing Option-Shift-F4 which will cause your volume to be decreased by a quarter of one block.