Father and sons : confronting a uniquely daunting paternal legacy / by Robert L. Marshall -- Keyboards, music rooms, and the Bach family at the court of Frederick the Great / by Mary Oleskiewicz -- C.P.E. Bach's keyboard music and the question of idiom / by David Schulenberg -- Voices and invoices : the Hamburg vocal ensemble of C.P.E. Bach / by Evan Cortens -- Recently rediscovered sources of music of the Bach family in the Breitkopf archive / by Christine Blanken