Their 2014 single "#Selfie" reached No. 16 on the US charts and No. 11 on the UK charts while their 2015 single "Roses" reached No. 6 on the US charts.[1] They released their debut EP, Bouquet, in October 2015. In February, the duo released the single "Don't Let Me Down", featuring vocals from Daya. The song has so far peaked at No. 4 on the US Billboard Hot 100, becoming their highest charting single to date in the US.