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) critics for its fashion, and portrayal of the song's lyrics. Among her live performance staples, Azalea promoted the single with live renditions on "Britain & Ireland's Next Top Model" and "Nikki & Sara Live". It was also included in the set list for her The New Classic Tour (2014). A number of remixes were commissioned for the single's release, including an official remix featuring American rapper Wale. During December 2012 and January 2013, "Work" was developed by Iggy Azalea as one of the first three songs for her debut studio album, "The New Classic". The song was written in Wales