A predominant theory suggests that the derivation of 'senzairaku' from taikodai lie on the fact that a newly created Noh song 'senzairaku' during the Edo period in now Tsurajima, Kurashiki City became so popular that people generally chanted the song in shouldering the taikodai in their neighborhoods, which led to call the taikodai itself 'senzairaku.'
江戸期謡曲「千歳楽」が現在の倉敷市連島で創作され流行、太鼓台を担ぐ際謡曲「千歳楽」を唄うことがこの界隈で普遍化し太鼓台自体を「千歳楽」と呼ぶようになったとする説が有力。