They also performed the song on " Late Night with Seth Meyers" on June 4, 2014, and on Good Morning America on June 6, 2014. Lovato performed a mash-up of "Really Don't Care" with " Neon Lights" on the season finale of the American version of Idols with the Top 13 girls. On the US Dance Chart, it peaked at Number 1 making it Lovato's third number one and Lloyd's first number one on that chart. After it was released as a single, it peaked at number 26 making it Lovato's eighth top 40 hit on the Hot 100 and making Cher Lloyd's third entry on that chart and second top 40 hits since her hit song "Want U Back". On the other hand, Melinda Newman of HitFix found the song to be too generic, comparing it unfavorably to Icona Pop's breakout hit "I Love It".īefore it was released as a single, "Really Don't Care" debuted on the Billboard Hot 100 at number 98. Sam Lansky of Idolator described the song as "irresistibly spunky", but found Lloyd's short feature to be superfluous. He also commented positively on the placement of the song on the tracklist, noting that "Really Don't Care" serves a "buoyant reprieve" after more emotionally-heavy tracks. Billboard writer Jason Lipshutz praised Lovato's sassy confidence on the track, which effectively showcases their "overpowering pipes". Lyrically, the song is a message of defiance to a former lover, with Lovato confidently singing such lines as "Even if the stars and moon collide, I never want you back into my life." The song was written in the key of G minor.Īdrienne Erin of Star Pulse called "Really Don't Care" a "rocking" dance hit, and noted that Lovato's "angsty" vocals "show that she means business" she declared it her favorite song from Demi. "Really Don't Care" is an uptempo dance-pop song, with influences of bubblegum pop, that runs for three minutes and twenty-one seconds.