Brass Tone Pipes. Brass Tone Pipes have a bell-like, long reverberating and singing tone. Brass Tone Pipes - A=440 Hz. range c''-g''' available, 20 note available. Note: 01 c"""" | 02 c#'' | 03 d"""" | 04 d#'' | 05 e'' | 06 f'' | 07 f#'' | 08 g'' | 09 g#'' | 10 a'' | 11 a#'' | 12 b'' | 13 c''' | 14 c#''' | 15 d''' | 16 d#''' | 17 e''' | 18 f''' | 19 f#''' | 20 g'''