mxmxmxmxmxm, yep I think your view on the combinations is correct. I am also a singer, used to do heaps of running, but got a BAD dose of sports induced asthma 4 years ago. This was caused, thinks my Doctor at the time, by acid. Anyway yaddy yaddy yaaa - long story short, later, I have had huge success with this eating regime. I eat meat, veges, fat, a few nuts and seeds, and very small amount of fruit. Oh and I have cream in my coffee. I went off omeprazole - i week in. My asthma (just started running again) is so much better, that I am only having one puff of ventolin (instead of two), and I can sing agin, well hold a steady note for a decent time. I haven't been able to do that for a while, and I believe that the food intake, asthma, reflux has all been related.
I have had the odd twinge of reflux over the last 6 months, but never wrote down what I thought was the cause at the time - however it could be a slow road. There is obviously damage in there, and damage takes time to heal, so write down some observations now, and revisit every week or two. Just so you can note your progress.
good luck
"never let the truth get in the way of a good story "
...small steps....