This was exactly the book that I wanted it to be, a long slow thoughtful meditation on what it means to be part of a longstanding artistic collaboration. The author covers how the quartet got together, why each of them chose chamber music rather than a career as a soloist, what they found motivating and joyful about the pursuit, and how their gestalt has ripened over the years. One of my favorite sections of the book was listening to his meditation on hearing their youthful performances of a piece, and then their more recent performances. It wasn't a one-way "oh yeah we've gotten so much better" street -- sometimes he preferred their early work, sometimes the later, and sometimes it wasn't so much a matter of preference as an appreciation of the ranges of expression. I enjoyed the opportunity to temporarily step into their world.