Complex sentence: Faust grew up in the Chicago area, and began playing the organ at age 4 by learning from her mother, also a professional organist; during high school and college, she would often fill in for her mother at various engagements.
Split into simpler sentences: Faust grew up in the Chicago area, and began playing the organ at age 4 by learning from her mother, also a professional musician. During high school and college, she would often fill in for her mother at various engagements.