Adagio for Strings

I have always loved this piece by Barber. I recently found this organ arrangement by Jamin Hoffman. It is shorter than others and is written in the key of C. I believe that by increasing the pitch by one half step, using Hauptwerk,I have taken it from C to B flat, the key in which it was written. (If this is not right, or if it doesn't sound right, please let me know.) I recorded it on the Oloron sample set because I think it has nice string sounds.