Thanks for the further info, Genie.

I've had to cancel a couple of things because I was sick - what I did then was arrange for a replacement. I contacted the other musician first to see that he wanted the gigs, then called the ADs and said that I had bad news and good news. I figure that this is much better for public relations than just cancelling, or even just suggesting someone else who might not be able to do it.

And when I was recovered enough to go out and play my instruments but my singing voice wasn't up to scratch yet, I hired a singer a couple of times to come with me. These gigs weren't worthwhile for me financially, but I figure that they will pay off in goodwill with the ADs and with the people I've given work to.

Cheers, Marion