All are typical phase problems, involving complex signals and interference patterns. With a bit of math at your back, the key is to know how to listen for them and how to fix them.
A woman composer of the 18th century? Blasphemy! Maria Teresa Agnesi was born in Milan in 1720 to Pietro Agnesi, a man of modest nobility. She received a wonderful liberal arts education with her sister, who became a lecturing mathematician, while Maria Teresa turned out to be a talented harpsichordist and singer.