Onstage chemistry. Powerful stuff.
And what was this about? Simple. I'd sung in a bloody brilliant choral concert at Birmingham Town Hall, the previous day. Now, singing in a choir is really no big deal; people do this all the time. I've been singing for maybe five years with the same group of very nice people; it's thoroughly enjoyable.
But because I participated in last week's shindig – a proper, pomp and circumstance, full-on, full scale Classical affair, with loads of voices and an orchestra - I now have a much better idea of the things that make live musicians, or for that matter any live performer, tick. It's taken me this long to work it out; odd, considering I've been going to gigs for over fifty years.