Ian and DNJ: an important point I'd like to make when relying on the 'transpose button' to transpose more than 3 semi tones (> minor 3rd) away from the key you're actually playing in, is that it can dramatically alter (often negatively) the sound of your chords played & heard live), because when a chord played is voiced for the lower part of the keyboard, when transposed up/down too far, it can sound terrible , and the reason keyboard players typically play different chord voicings dependent on the key of a song,or the keyboard octave range the chords are being played. How a chord sounds has a lot to do with the harmonic overtone series, but that's another story.