The bolero is a 3/4 dance[2] that originated in Spain in the late 18th century, a combination of the contradanza and the sevillana.[3] Dancer Sebastiano Carezo is credited with inventing the dance in 1780.[4] It is danced by either a soloist or a couple. It is in a moderately slow tempo and is performed to music which is sung and accompanied by castanets and guitars with lyrics of five to seven syllables in each of four lines per verse. It is in triple time and usually has a triplet on the second beat of each bar.