* Notes *Last weekend the Staatskapelle Berlin performed all five of Beethoven piano concertos paired with works by Arnold Schönberg at Salle Pleyel. Friday night started off with Beethoven's Piano Concerto No. 1 in C Major, a cheerful, almost Mozartian piece. Daniel Barenboim played straightforwardly, without any bravado. The woodwinds had a certain whimpering quality,…