<P> "I'm in Love with a Monster" is a song recorded by American girl group Fifth Harmony for the computer animated fantasy - comedy film, Hotel Transylvania 2 . It was written by Harmony Samuels, Carmen Reece, Sarah Mancuso, Edgar Etienne and Ericka Coulter with production handled by Samuels . It was released to digital retailers on August 14, 2015 through Epic Records and Syco Music and serviced to contemporary hit radio in the United States four days later on August 18 . "I'm in Love with a Monster" is a pop song that blends elements of R&B, soul, rock and hip hop with "jazzy" rhythms along with heavy and funky beats . Critics drew comparisons to the musical style of girl groups such as The Supremes . </P> <P> Lyrically, the track is about someone who is in love with a mischievous person, using "monster" as a hyperbole to describe their personality . The song failed to chart in domestic and international charts but did enter the Belgium charts, peaking at number 23 . Its music video premiered at the Sony billboard in Times Square on August 27, 2015 and features the group dancing in front and inside a hotel with actors dressed as monsters, in reference to the song's addition in the movie . Each member played a character for this video . Live performances for this track included The Late Late Show, hosted by James Corden and a special radio performance at On Air with Ryan Seacrest . </P> <P> The song was released to digital retailers as a single, and was later featured on the Japanese deluxe edition of the group's debut studio album, Reflection . </P> <P> An announcement of the artist involved in the track for Hotel Transylvania 2 was first made public by Lia Vollack, president of Worldwide Music for Sony Pictures Animation, on June 16, 2015 . When making the announcement at the press release, Vollack commented that there were "few groups out there" that could match the "incredibly fun feel" and the "animated vision" that Genndy Tartakovsky brought to the movie and stated that Fifth Harmony "knocked it out of the park ." According to Vollack, the track was exactly what "we were hoping for ." A preview of "I'm in Love with a Monster" was featured in a trailer for the movie which was released on June 17, 2015 . The song was released for digital download on August 14 . and serviced to contemporary hit radio four days later on August 18 . </P>

Who sang i'm a monster in hotel transylvania