The first thought that comes to my mind is a link to an earlier post 'God likes Jazz'. In the band each person plays a different instrument, none have any scripted music, to hear them individually one would witness different music but together they make harmony and music. In the image this is not evident, except that they all face the same way!
This group, playing in a square in Rome one summer, were clearly enjoying themselves and were full of enthusiasm, drawing their audience into the rhythm and the melody of their music, which had originally been composed by another.
This always strikes me as a clear image of Christian life and witness - we pick absorb the music of another in order to play our part sharing it for the benefit of others with enthusiasm and joy. But we each do it in our own way with the particular gifts which are ours, contributing to a whole.
This evening we will enjoy the annual City of Birmingham Symphony Orchestra and Chorus' Christmas concert which I anticipate will be just this, but on a much bigger scale. I'm just glad that the wearing of silly hats is not an obligatory part of being a Christian!