John is a full member of the Incorporated Society of Musicians
In the UK, if you want to produce a CD containing copyright material, here's where to apply
We buy most of our scores here
John can recommend this course on music theory...
...and this overview of the practice of music
In the UK, look for (or advertise) a choral concert here
This is a more general concert-finder
John sang second-bass in this choral society
John sings bass in the church choir (and also plays bass in the worship band) here
John sang bass in this drama-and-music worship performance group
John sang bass-baritone with this male-voice choir
This is a very useful site, listing many UK choirs