In this pathbreaking book, Richard D'Aveni shows how competitive moves and countermoves escalate with such ferocity today that the traditional sources of competitive advantage can no longer be sustained. D'Aveni argues that a company must fundamentally shift its strategic focus. He constructs a compre-hensive model that shows how firms move up "escalation ladders" as advantage is continually created, eroded, destroyed, and recreated through strategic maneuvering in "four arenas" of competition. Using detailed examples from hypercompetitive industries such as computers, automobiles, and...

Reviewing the first volume of Opera Scenes for Class and Stage, Walter Ducloux wrote in the Opera Journal: "If you can come up, within five seconds, with an operatic excerpt involving two sopranos, four mezzo-sopranos, two tenors, and a bass, you don't need this book. Otherwise hurry and buy it. I keep it on my night table."

In More Opera Scenes, the Wallaces have reviewed 100 additional operas and have chosen over 700 scenes. The popular "Table of Voice Categories" providing more than 300 combinations is also featured in this volume.