just give them music to have fun dancing to and listening to, and hopefully I accomplished that." Composition In terms of music, Unbroken explores uptempo R&B songs and electronic genres in contrast with emotional and personal ballads. Lyrically, the album presents more "mature" themes about relationships in comparison to its predecessors Don't Forget and Here We Go Again, being described as an "evolution" and next chapter in Lovato's career. In interview with Billboard, Lovato explained the variety of sounds present in its production: "Ultimately it's pop, but I have songs that are really dance-like, songs that are more R&B, and songs like 'Skyscraper' that are not really R&B at all. And so it just depends on the song." A great part of the album is set in a time signature, however, "Lightweight" and "Fix a Heart" are composed in compound time. The album opens with R&B tracks, each song features appearance from an artist. The opening track "All Night Long" features rapped verses from Missy Elliot. The song incorporates Timbaland's characteristic beats, Lovato sings over a pumping beat, beatbox vocals and guitar riff. Describing the song, Lovato stated: "It's about staying up all night long and singing it to the boy that you like, and it's flirty and fun and it's not too grown-up, but it's grown-up enough." "Who's That Boy" features syncopated groove and synths, the song featuring guest appearance from Dev. "You're My Only Shorty" contain a repetitive chorus sung by Iyaz, the song is backed by synths. The fourth track "Together" is a duet with the singer Jason Derulo, its midtempo R&B song backed by guitar chords, Lyrically, the song delivers an inspirational message about how we can change the world if we come "together". The fifth track "Lightweight" is a doo-wop-inspired ballad with a minimal orchestral arrangement. Lyrically, it is the first track to express Lovato's fragility and sensitivity, it can be noted during the chorus where Lovato sings: "I'm a lightweight, easy to fall, easy to break, with every move my world shakes." "Lightweight" has a tempo of 64 beats per minute in compound quadruple () time. The title track "Unbroken" is an uptempo dance song that runs through a "brittle" beat influenced by electro-industrial music. The composition of the song incorporates influences of disco music from the 1980s. Lovato's vocals are accompanied with a synthesized echo in the song's background. After the second chorus,