is Tohoshinki's 25th Japanese single, released on January 21, 2009. Bolero was the theme song for the Japanese movie, "Subaru (昴)]. The movie is named after the ballerina lead named Subaru, which released on March 20, 2009. Tohoshinki made their debut screen on Subaru. The members of Tohoshinki appeared in one scene in which Meisa Kuroki’s character visited a bar; where they performed on a stage during the scene.

Bolero is a genre of slow-tempo Latin music and its associated dance. There are Spanish and Cuban forms which are both significant and which have separate origins.

Boléro is a one-movement orchestral piece by the French composer Maurice Ravel (1875–1937). Originally composed as a ballet commissioned by Russian actress and dancer Ida Rubinstein, the piece, which premiered in 1928, is Ravel's most famous musical composition. Before Boléro, Ravel had composed large scale ballets (such as Daphnis et Chloé, composed for the Ballets Russes 1909–1912), suites for the ballet (such as the second orchestral version of Ma mère l'oye, 1912), and one-movement dance pieces (such as La valse, 1906–1920). Apart from such compositions intended for a staged dance performance, Ravel had demonstrated an interest in composing re-styled dances, from his earliest successes – the 1895 Menuet and the 1899 Pavane – to his more mature works like Le tombeau de Couperin, which takes the format of a dance suite.