I have a song I started a few months back. It consists of acoustic guitar tuned to A-440, and some apple loops which I may have changed with the pitch on. I am now wanting to use a midi keyboard to lay down a virtual instrument. Whenever I add a new software instrument track and play a note it is 3 notes higher than it should be ( C is actually E flat). If I start a new song and add a new software instrument track the virtual instrument is sound the correct pitch ( C = C). What types of things should I be checking on my project/song where the pitch is incorrect? I can't seem to figure it out. I can use transpose on the track to a correct the pitch problem but that does not seem like the root cause of the problem.