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.
An early form of modern jazz played by small groups and featuring driving rhythms and complex, often dissonant harmonies.
To participate in bebop jazz, such as by dancing in a way associated with the genre.
To walk in an easygoing, carefree manner.