On this page you will find the One More Sleep ringtone in several versions, all free to download. Artist: Leona Lewis. There are 6 versions, from 15 to 55 seconds long. Tags: pop and midtempo. Click a tag below to see more ringtones like this. Android users need the .MP3 file, iPhone users need the .M4R file. Both are free. More ringtones by Leona Lewis are on the artist page, the link is under the title.