Les,  When transposing, you must remember that not all the notes in
the major scale are one note apart.  There are two points in every
(major) scale that are only a half-step apart.  In C scale, there is
only a half-step between E and F (there is no E-sharp).  The other
place where this occurs is between B and C (there is no B-sharp).

Every (major) musical scale regardless of which note it starts on follows
the same progression: whole, whole, half, whole, whole, whole, half.

Here is one other piece of terminology that I wish more people in
mechanical music would use.  Instead of calling it "tuning the organ
one step low",  call it "tuning the organ in the key of B-flat".
Many instruments, including trumpet, clarinet, and tenor saxophone
are tuned in the key of Bb.  Normal tuning would be in the key of C.
Instruments tuned this way include piano and flute.

Ben Haass