A lyric video, released on July 1, 2014, is a long, one-shot zoom-in on Mendes in The George Street Diner in Toronto, who occasionally converses with the waitress of the diner as he is singing. Lyrics from the song appear in spots such as tables and hanging lights. It ends with the waitress reading a note left from Shawn, smiling as the scene fades.[1] The official video was released on March 11, 2015.
The title of the song, "Life of the Party", may give the impression that it's an upbeat dance song, but in an interview, Mendes described the song as not "super happy, but it's also not depressing". The lyrics represent being happy with yourself and figuring out who you are and who you want to be.[2] It was written by two writers from New York, Ido Zmishlany and Scott Harris, though Mendes felt a strong connection to it.[3]
The song debuted on the Billboard Hot 100 chart of July 12, 2014, at number 24, making it his first entry in the chart and first top 40 hit.[4][5] Mendes became the youngest artist to debut in the top 25 with a debut song on the Billboard Hot 100 at 15 years, 11 months and 4 days of age.[6] The song debuted at number five on the Hot Digital Songs chart with 148,000 downloads.
^"ČNS IFPI" (in Czech). Hitparáda – Digital Top 100 Oficiální. IFPI Czech Republic. Note: Select 38. týden 2014 in the date selector. Retrieved August 28, 2014.
^"ČNS IFPI" (in Slovak). Hitparáda – Singles Digital Top 100 Oficiálna. IFPI Czech Republic. Note: Select SINGLES DIGITAL - TOP 100 and insert 201438 into search. Retrieved August 30, 2014.