reasons. Chart performance On 2 May 1988, "Got to Be Certain" was released in the United Kingdom. The song became Minogue's second top five hit when it debuted at number fifteen on the singles chart before climbing the chart in the weeks that followed, peaking at number two and remaining there for three weeks. It eventually sold 315,000 copies. Outside of the UK, the song was also widely successful. It reached number one in seven countries, including Finland and Israel. The single sold 17,227 copies in Sweden at the time. In New Zealand, it peaked at number two and stayed in the charts for 14 weeks, making it her most successful single in the country at that time. In Australia, "Got to Be Certain" was released on 7-inch and 12-inch vinyl on 20 June 1988, cassette single on 11 July 1988, and the remix 12" was released on 25 July 1988. It became the second single ever to debut on the Australian singles chart at number one, remaining in the top spot for four weeks from July 4, 1988 (ARIA). Live performances Minogue performed the song on her Aphrodite: Les Folies Tour. Formats and track listings CD single "Got to Be Certain" (Extended Mix) – 6:36 "I Should Be So Lucky" (Extended Mix) – 6:08 "Got to Be Certain" (Out for a Duck, Bill, Platter Plus Dub Mix – Instrumental) – 3:17 7-inch vinyl single "Got to Be Certain" – 3:17 "Got to Be Certain" (Out for a Duck, Bill, Platter Plus Dub Mix – Instrumental) – 3:17 12-inch vinyl single "Got to Be Certain" (Extended Mix) – 6:36 "Got to Be Certain" (Out for a Duck, Bill, Platter Plus Dub Mix – Instrumental) – 3:17 "Got to Be Certain" – 3:17 12-inch remix "Got to Be Certain" (Ashes to Ashes – The Extra Beat Boys remix) – 6:52 "Got to Be Certain" (Out for a Duck, Bill, Platter Plus Dub Mix – Instrumental) – 3:17 "Got to Be Certain" – 3:17 iTunes digital EP – Remixes (2009) "Got to Be Certain" "Got to Be Certain" (Extended Mix) "Got to Be Certain" (Ashes to Ashes – The Extra Beat Boys remix) "Got to Be Certain" (Out for a Duck, Bill, Platter Plus Dub Mix – Instrumental) "Got to Be Certain" (backing track) "Love at First Sight" (1988 version) (instrumental) "Love at First Sight" (1988 version) (backing track) Charts and certifications