They are easy on the ears, a test for the fingers and a balm for the spirit. With a little imagination and manual dexterity, electronic keyboards can make otherwise struggling players feel like pros. Not like Horowitz, exactly; more like Flash Gordon auditioning for a garage combo, or one of those zoological enigmas who made spacey sounds in the Star Wars saloon. Keyboards can reproduce instrument sounds, even sample sound effects (from a rain forest to a barking dog), and turn any tin ear into a one-man band.
The keyboard is not only becoming pervasive across the U.S. but is also...