(Limelight). The exhilarating mix of humor, philosophy, fact and whimsy that marks these essays derives from more than 200 lectures Bruce Adolphe has given over most of the past decade, at the Chamber Music Society of Lincoln Center and at music festivals around the country. The composer of four operas as well as chamber music, concertos and orchestral works, Adolphe has written for Itzhak Perlman, David Shifrin, Beaux Arts Trio, the Orpheus Chamber Orchestra and many other renowned musicians. His essays, however divergent their apparent subjects, all serve a common purpose: to deepen our understanding of how music comes to be and how it may be enjoyed.