Sometimes, just sometimes, you get to see a band when they really are on top of their game.
Queen on the Magic tour in '86, Guns 'n' Roses on the Use Your Illusion Tour, Metallica on the Black Album tour.
If you are a fan of live music you will know what I mean.
Last night I saw Muse at Wembley, and boy do they rock.
They do bombast, they do stadium anthems, they do it loudly and proudly. They are hitting heights they they can only have dreamt of when they got going in Teignbridge only a few years ago and they clearly know it and love it.
They wear their influences on their sleeve, coming on to U2's Vertigo and with pretty obvious nods to Queen and others along the way.
And with their new single 'Knights of Cydonia' about to be released they can even claim to be bringing prog rock to the masses.