Sisters Ann and Nancy Wilson are the frontwomen of Heart, a band whose raw brand of rock and roll has been thrilling fans for more than 30 years. At a time when men dominated rock, the sisters made a name for themselves playing their own instruments and writing their own music, including hits like "Magic Man," "Barracuda," and "Crazy On You." But the constant crush of touring became too much for one of the sisters, leading to a traumatic breakup in 1995. Here is an excerpt from their new book, "Kicking and Dreaming: A Story of Heart, Soul and Rock & Roll" released this week.

Ann Wilson

In the spring of 1995, Nancy called and said she wanted to talk. She was living part of the time in Los Angeles with Cameron, but also still coming up to work on Heart projects. I knew they were trying to start a family, without success. She...