Comprising three sisters and one brother of the Corr family -- vocalist Andrea, drummer Caroline, violinist Sharon and guitarist/keyboard player Jim -- the Corrs blend the music of their Irish background with contemporary pop/rock and occasional use of synthesizers. The quartet formed in 1991, and was confined to regional popularity in Ireland until 1994, when the American ambassador to the country invited the Corrs to perform at the 1994 World Cup in Boston.