I wasn't so keen on the second act, final concert. But you couldn't fault their skill. The bass sound was a kick drum I think, it certainly took the edge off for me.

I listened comfortably without earplugs - and noticed the soundman. An irony that would not be lost to those familiar with the volume debate in another place. And some who were present.

FWIW earplugs are not much use in concerts because they mostly dull higher frequencies which changes the musical appreciation. Ceilidhs -they do their stuff well.