ストック・エイトキン・ウォーターマン
Unlike her previous single, "Got to Be Certain" was not written especially for Kylie. It was originally recorded by singer and PWL-stablemate Mandy Smith for her debut album "Mandy" which was also produced by Stock Aitken Waterman. However, for unknown reasons, her version was shelved and the song was given to Kylie to record instead. Smith's original recording of "Got to Be Certain" was denied by Mike Stock in his book "The Hit Factory: The Stock Aitken Waterman Story", but it was eventually released in 2005 as a bonus track on the hits compilation "Stock Aitken Waterman Gold". Smith's version was also added to the 2009 re-issue of her album.