Thanks for the BA, Khandro.
This might give you an indication of the quality of my singing voice:
When I was in the 3rd year at junior school, we had our music lessons in the church hall across the road from the school (presumably so that we could make as much noise as possible without disturbing other classes). We had a fantastic class teacher, who fired everyone with enthusiasm, so when he told us to sing we really belted out every note.
One day though, as we were all shaking the rafters with our singing, he went carefully along the line of us all, listening intently to each of our voices. When we got to the end of the song, he said "Perhaps we could try that again, please - and this time, Christopher, I think that it might be best for everyone else if you didn't sing"
;-)