Assertion: lullaby | /r/AtLocation | art music of all periods
Facets:
Source sentences:
text: The lullaby as a vocal (with or without accompaniment) or instrumental piece appears in art music of all periods; examples are found in medieval carols with 'lullay' burdens, in 18th-century choral music, 19th-century lieder, and 19th- and early 20th-century piano pieces.