The medieval romances, especially the Breton lays, drew freely on these folk sources, sometimes directly.
In the introduction, they dropped the claim of fidelity to folk sources.
Using folk sources for raw material, Nazareth created salon works of elegance, vivacity and wit.
His band's début, "The Tennessee Fire," channelled a variety of American rock and folk sources, with amiable results.
When the "Another Self Portrait" mines folk sources, it both expands the original vision and extends its reach.
Most literary tales were derived in some measure from folk sources, and, once they were published, they in turn influenced folk versions.
Marcus Mumford from Mumford & Sons performed "I Was Young When I Left Home," an early Bob Dylan song that lifts openly from folk sources, like an age-old plaint.
In response, German composers, in an astonishing intellectual sleight of hand, defined the national style not in terms of folk sources but in terms of abstract ideals.
The folk sources of many of the songs from the Shijing and later books show that courtly musical life was not without its joyful and more personal and secular moments.
For all its technical solidity, his music (combining elements of chromaticism, collage, experiments in sonority, bits of serialism, Neo-Romantic tonality and Russian folk sources) has lacked a strong voice.
Although Mr. Moiseyev's choreography derived from folk sources, he created his works for professional dancers: as observers noted from the start, no peasants or villagers ever danced with such theatrical flair.
