"Sleepless" is a single by Swedish electronic music duo Cazzette, featuring vocoder-processed vocals from UK artist The High. It was released on 12 May 2014.
The track was initially released on May 12 on Spotify and was released on Beatport, iTunes, and Amazon the next day on May 13.[1] An EP entitled "Sleepless (Remixes I)" was also released on iTunes June 27, 2014 and on Beatport July 7, 2014.
^"ČNS IFPI" (in Czech). Hitparáda – Digital Top 100 Oficiální. IFPI Czech Republic. Note: Change the chart to CZ – SINGLES DIGITAL – TOP 100 and insert 201433 into search. Retrieved August 19, 2014.