The use by Girdlestone and Hutchings of the description "double" variations should not be confused with the double variation form often used by Joseph Haydn for the form of a whole movement (ABA1B1).
A utilización de Girdlestone e Hutchings da descrición de variación «dobre» non debe ser confundida coa forma de variación dobre empregada frecuentemente por Joseph Haydn como forma dun movemento completo (ABA1B1).