<P> A ballad, "Stone Cold" discusses the pain of watching an ex move on and be happy with someone else . The song incorporates pop and soul influences, and is centered on a piano melody, with a stripped down production aimed at highlighting Lovato's vocals . Some critics compared "Stone Cold" to Lovato's 2011 single "Skyscraper" and the work of English singer Adele . </P> <P> "Stone Cold" is a soul sentimental ballad . It was written by Lovato, Laleh Pourkarim and Gustaf Thörn . According to the digital sheet music published by Kobalt Music Publishing America, Inc., "Stone Cold" was originally composed in the key of F minor with a "moderately fast" tempo of approximately 144 BPM . Lovato showcases a vocal range on the track, alternating between belting the verses and delivering other lines such as "I'm happy for you" softly, and spans from a low note of F to a high note of G#. The song features a stripped down production style that focuses primarily on piano and vocals . </P> <P> The song's lyrics portray the pain of watching an ex move on after a break - up and trying to be happy for them once they find happiness with someone else . A writer from Billboard compared the song to Lovato's own "Skyscraper" (2011), and to Adele . During an interview with Ryan Seacrest, Lovato stated, "This song is your heartbreak song . I wanted to have a song that people can listen to when they're going through it, or they're thinking about a time they were heartbroken ." She also added that "Stone Cold" "is the type of song that I wanted people to feel in their hearts and ripped their guts out ." </P> <P> Christina Garibaldi of MTV complimented Lovato's vocals, claiming that they have "reached new heights" on the song, as well as her emotional delivery . </P>

Who did demi lovato write stone cold about
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