Confident (album) 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. "Stone Cold" received comparisons to Lovato's 2011 song "Skyscraper" and the work of English singer Adele. The album follow with the trap-inspired song "Kingdom Come" it features vocal appearance by rapper Iggy Azalea. Several critics noted that the song is comparable to Azelea's "Black Widow" (2014) featuring Rita Ora. "Waitin for You" featuring vocals by singer Sirah, musically, it's an R&B and hip hop song that starts with
Work (Iggy Azalea song) an interpolation of RuPaul's "Supermodel", and a Miami strip-inspired stage backdrop as a reference to the song's "No money, no family, 16 in the middle of Miami" line. She also performed the song during her set for the 2014 MtvU Woodie Awards at South by Southwest in April. On 15 May 2014, Azalea performed the song on "Jimmy Kimmel Live!". The rendition was praised by reviewers from "Exclaim!", "Vibe" and Idolator. On 8 August 2014, Azalea performed the song during her set on "The Today Show". Jim Farber of the "Daily News" noted that the rendition "put the emphases on