 Musically, "No Sleep" was described as a dance-pop album with eurodance influences.Several covers were recorded for the album of material released by Romanian acts Akcent, Corina, Connect-R and Fly Project, as well as by American singer John Michael Montgomery.Music critics met "No Sleep" with mixed reviews, widely noting its lack of profundity, but pointing out the tracks "Keep On", "Hurtful" and "I Swear" as highlights.