| Term | Description |
|---|
| Karaoke | Karaoke is a form of entertainment in which amateur singers sing along with recorded music using a microphone and public address system. |
| Key | In music theory, the term key is used in many different and sometimes contradictory ways. A common use is to speak of music as being "in" a certain key, such as in the key of C or in the key of F-sharp. |
| Key (instrument ) | A key is a specific part of a musical instrument. The purpose and function of the part in question depends on the instrument. |
| Key signature | In musical notation, a key signature is a series of sharp symbols or flat symbols placed on the staff, designating notes that are to be consistently played one semitone higher or lower than the equivalent natural notes (for example, the white notes on a piano keyboard) unless otherwise altered with an accidental. |
| Keyboard instrument | A keyboard instrument is any musical instrument played using a musical keyboard. The most common of these is the piano. Other widely used keyboard instruments include various types of organs as well as other mechanical, electromechanical and electronic instruments. |
| Klezmer | Klezmer is a musical tradition which parallels Hasidic and Ashkenazic Judaism. |
