Almost all her life, Amparo Iturbi has played second piano to her famous brother Jose. If they weren't rippling away together on the Mozart concerto for two pianos, Jose was usually on the podium, conducting while she pounded out the solo part. One of Jose's favorite cracks: "I am my sister's worst enemy."
Last week, Amparo set out to show her brother, and the public,"what she can do on her own. She picked a bad time and a worse place: Philadelphia's Robin Hood Dell, the night the Republican convention opened. When she finished Liszt's bombastic Piano Concerto No. 1, the 5,000 people...