A bravura performance! The artistic merit of performers with superior technique has long been almost ipso facto denied. At last, Mark Mitchell launches a counterattack. In essays crackling with pianistic lore, Mitchell takes on topics such as encores, prodigies, competitions, virtuosi in film and literature, and the erotics of musical performance. Liszt, Horowitz, and Argerich share these pages with the eccentric Pachmann, Ervin Nyiregyh ("the skid-row...