Arrive a bit early say at ten minutes to one so as to get a front seat for full immersion in the performance.The programme of the day is found on the internet under St James, Piccadilly.
Oy vey Phizzy! little of this cultural glory would have arisen if not fuelled by the Church.
The reason being that the church had accumulated wealth beyond the dreams of avarice.Take Bach for example most of his work was for church music. The greatest patrons of the best artists were the Church.
After the Middle Ages the churches were often given as gifts to the community by the land owning aristocracy as was St James.The truth is that society was highly and unfairly stratified in the past, and the Baroque architecture exemplifies it. If you had power then you also had wealth, and with your wealth you had to show just how grand you were. It was a power display but executed in the most refined taste from the best artists and architects of the day. Religious teachings were just a small part of the background noise, their themes of ultimate "salvation from sin" unified the communities of all ranks by common appreciation of "holy" things. Never mind-- we can still benefit from these extravagances of the past.