High Quality Content by WIKIPEDIA articles! Bluegrass music is a form of American roots music, and is a sub-genre of country music. It has roots in Irish, West African, Scottish, Welsh and English traditional music. Bluegrass was inspired by the music of immigrants from the United Kingdom and Ireland (particularly the Scots-Irish immigrants in Appalachia), and African-Americans, particularly through genres such as jazz and blues. In bluegrass, as in some forms of jazz, one or more instruments each takes its turn playing the melody and improvising around it, while the others perform accompaniment; this is especially typified in songs called breakdowns. This is in contrast to old-time music, in which all instruments play the melody together or one instrument carries the lead throughout while the others provide accompaniment. Traditional bluegrass is typically based around a small set of acoustic stringed instruments including mandolin, acoustic guitar, banjo, fiddle, resonator guitar and upright bass, with or without vocals. Bluegrass music has attracted a diverse and extremely loyal following world-wide. Many enthusiasts often describe their introduction to the genre as akin to having "caught the bug."