Transpose
To shift a set of musical notes by a fixed interval. This can happen in a number of ways—for example: 1) by rewriting an entire piece of music in a new key; 2) by shifting the tuning of an instrument so that it plays at a lower or higher interval than the note played (either artificially, as with an electronic keyboard, or by the natural tuning of a transposed instrument, like a trumpet); or 3) Transposing on-the-fly, playing at a set interval above or below what is written (also known as transposing by sight).
