I need a little clarification. I play the Bb Tenor Sax. According to the transposing table with a concert instrument, C equates to a D on my Sax. When I use my Korg TM-50 (set to 440 HZ) if I play a C on my keyboard I get exactly the same read out when I play E on the Sax. The tuner displays an in tune C. They are in tune. I'm confused. when I play a C on the Keyboard shouldn't the corresponding note be a D on the Sax.