Guitar chord in the abstract musical-theory of chords for all instruments. For example, in the guitar (like other stringed instruments but unlike the piano), open-string notes are not fretted and so require less hand-motion. Thus chords that contain open notes are more easily played and hence more frequently played in popular music, such as folk music. Many of the most popular tunings—standard tuning, open tunings, and new standard tuning—are rich in the open notes used by popular chords. Open tunings allow major triads to be played by barring one fret with only one finger, using the finger like a capo. On guitars
The Key Word and Other Mysteries appeared in six other stories, five of which appear in "The Disappearing Man and Other Mysteries". (The eleventh and final Larry story does not appear in any book.) The Key Word and Other Mysteries The Key Word and Other Mysteries is a collection of mystery short stories by American author Isaac Asimov, featuring his boy detective Larry. The book was illustrated by Rod Burke. It was first published in hardcover by Walker & Company in 1977, and in paperback by Avon Books in 1979. A British edition illustrated by Geoff Taylor and adding one additional story was issued by Pan