I was listening to some sample questions for the Advanced Placement Music Theory examination, given to high schoolers in the United States. I noticed that on a lot of the listening examples, especially the ones featuring piano, the listening track would be consistently one semitone lower than the notated answers. This throws me off when I'm trying to transcribe.
These samples are from 1998. Is this practice still followed in today's exam? Does anyone know why they would do this?