Lipa performed at the awards ceremony held on 21 February at the O2 Arena in London. The singer collaborated with American DJ Whethan on the song "High" for the "Fifty Shades Freed" , released in February 2018. She started working on new material for her second album in March 2018. On 6 April, Lipa and Calvin Harris released the single "One Kiss", which topped the UK Singles Chart on 20 April, making it Lipa's second number one in the chart; Lipa provided the vocals and is also credited as a writer. The single went on to become the biggest selling song in the UK of 2018 and topped the chart for eight consecutive weeks. She performed in the opening ceremony of the 2018 UEFA Champions League Final in Kyiv on 26 May. It was reported that Lipa would be releasing collaborations with other artists coming out later in 2018, such as one with Mark Ronson and Diplo's newly formed superduo Silk City. Ronson later confirmed the song's title would be "Electricity". The song was released on 9 September. Lipa was also featured in "If Only", a song from Italian singer Andrea Bocelli's sixteenth studio album "Sì".