1970 – The Jackson Five went to No.1 on the US singles chart Posted on 12:46 am by Stu Sweatman The Jacksons 1970 – The Jackson Five went to No.1 on the US singles chart with ‘I Want You Back’. The song was originally written for Gladys Knight & The Pips and was the first of four No.1’s for the group. It made No.2 in the UK. Be Sociable, Share! Tweet