Frederick Fennell, the master band conductor who founded the famed Eastman Wind Ensemble and raised band performance to an art form, died early Tuesday at his home in Siesta Key, Fla. He was 90. Mr. Fennell died in his sleep, his daughter, Cathy Fennell Martensen, said in an e-mail message circulated to friends and colleagues. Through the pioneering Eastman ensemble, started in 1952, and a slew of recordings in the 1950's and 1960's, Mr. Fennell set a new standard of wind ensemble performance, often assigning just one player to each part and infusing band music with a new level of...