Vocal music is a genre of music performed by one or more singers, with or without instrumental accompaniment, in which singing (i.e. vocal performance) provides the main focus of the piece. Music which employs singing but does not feature it prominently is generally considered instrumental music (e.g. the wordless women's choir in the final movement of Holst's The Planets) as is music without singing. Music without any non-vocal instrumental accompaniment is referred to as a cappella.
Vocal music typically features sung words called lyrics, although there are notable examples of vocal music that are performed using non-linguistic syllables, sounds, or noises, sometimes as musical onomatopoeia. A short piece of vocal music with lyrics is broadly termed a song.
Oral literature or folk literature corresponds in the sphere of the spoken (oral) word to literature as literature operates in the domain of the written word. It thus forms a generally more fundamental component of culture, but operates in many ways as one might expect literature to do. The Ugandan scholar Pio Zirimu introduced the term orature in an attempt to avoid an oxymoron, but oral literature remains more common both in academic and popular writing.]citation needed[
Pre-literate societies, by definition, have no written literature, but may possess rich and varied oral traditions—such as folk epics, folklore, proverbs and folksong—that effectively constitute an oral literature. Even when these are collected and published by scholars such as folklorists and paremiographers, the result is still often referred to as "oral literature".