A person (usually a child, but some adults without experience may be one), that is not used to the layout of a keyboard (ie. no abc, the qwerty setup), and instead finds the letter (generally slowly), and then "pecks it" (hence the name).

Lots of people are becoming hunt and peckers, some are Touch-Typers (know the layout of a keyboard, don't need to look, etc).

One who has a mania for music.

Name of the innovative team that came up with the qwerty keyboard layout to slow down typists to prevent old mechanical typewriters from jamming.

Masters at inventing ways to slow people down, Hunt went on to inventing a catsup that pours more slowly and Peck went on to inventing a method of eating that made it take four times as long to eat your meal.