Discontinued 1. Prokofiev: Sinfonia Concertante in E minor 2. Tchaikovsky: Variations on a Rococo Theme 3. Tchaikovsky: Andante Cantabile Yo-Yo Ma (Cello) Lorin Maazel (Conductor) Pittsburgh Symphony Orchestra Leaving aside the Tchaikovsky, the Prokofiev is an extremely difficult piece. This is true not only of the solo part, but also of the orchestral accompaniment. It's clear that Maazel's sensitive baton elevates the standard of this performance. Ma is rich in nuance and has ample technique.