I do this too and it makes the concerts less boomy and I can actually hear the vocals. The only issue is that it distorts the perception of my own voice so I ha

I do this too and it makes the concerts less boomy and I can actually hear the vocals. The only issue is that it distorts the perception of my own voice so I have remember to speak louder to others or when ordering drinks. I also put in ear plugs when using loud tools or appliances, eg when mowing or cutting with a chainsaw.