The song differed from the standard "dramatic ballad" tradition of the Eurovision Song Contest by its flavour and rhythm, as well as by its performance. ABBA gave the audience something that had more rarely been seen before in Eurovision: flashy costumes (including silver platform boots), plus a catchy uptempo song and even simple choreography. The group also broke from convention by being the first winning entry in a language other than that of their home country; prior to 1973 all Eurovision singers had been required to sing in their country's native tongue, a restriction that was lifted briefly for the contests between 1973 and 1976 contests (thus allowing "Waterloo" to be sung in English), then reinstated before ultimately being removed again in 1999. Compared to later ABBA releases, the singers' Swedish accents are decidedly more pronounced in "Waterloo".