A vocal performance with no instrumental accompaniment.
Singing solely or mainly without instrumental accompaniment.
Related to a form of purely vocal music mostly associated with American college performance groups.
In a manner of a choir with no instrumental accompaniment; literally, "in the style of the (Sistine) Chapel (in Rome)", such as a musical Mass done a cappella.
Any pleasing or interesting sounds.
A series of sounds organized in time, usually employing some combination of melody, harmony, tempo, rhythm etc. usually to convey a mood.
An art form, created by organizing of pitch, rhythm, and sounds made using musical instruments and sometimes singing.
Electronic signal jamming.
A guide to playing or singing a particular tune; sheet music.
To seduce or entice with music.