First Class (song)

Harlow posted a snippet of the track on his social media accounts on April 1, 2022, captioning it in part "How 'bout this one next?" The snippet went viral on TikTok, with users responding to the song's "summery vibes", with the clips featuring the song gaining a total of 28.8 million views before its official release.

The song sees Harlow rapping about his "journey to success" and also "spelling out what's in store for his traveling companion" over a soft piano melody, which leads into Harlow sampling the chorus of Fergie's 2006 song "Glamorous". The track also contains a reference to Euphoria actor Angus Cloud.

The video clip was made available along with the release of Come Home the Kids Miss You, at midnight on May 6, 2022. Parts of the video are in black and white and it features a cameo appearance from Brazilian singer Anitta.

On May 15, Harlow performed "First Class" at the 2022 Billboard Music Awards. On June 26, Harlow performed "First Class" at the 2022 BET Awards alongside Brandy, who released a freestyle to the song's instrumental a month earlier. On August 28, Harlow performed "First Class" at the 2022 MTV Video Music Awards, with Fergie joining him to perform "Glamorous", which Harlow sampled for "First Class".

"First Class" debuted at number one on the US Billboard Hot 100, becoming the year's first hip hop song to reach the top. It earned the biggest streaming week of 2022 at the time, and the biggest opening week since Drake's "Way 2 Sexy" featuring Future and Young Thug in September 2021. The song spent three non-consecutive weeks at number one and also reached number one on the Radio Songs chart where it led for 4 consecutive weeks, becoming his first leader there. With three weeks atop the Hot 100, it is the longest running number one rap song in 2022. The song also peaked at number one on the Hot Rap Songs chart, as his second leader. The song ultimately peaked at number 6 on the Billboard Hot 100 year-end chart, making it the highest charting rap song of 2022 and at number 1 on the Hot R&B/Hip-Hop Songs year-end chart.

"First Class" debuted atop the Australian ARIA Singles Chart, becoming Harlow's first number one in the country. It also debuted at number one in New Zealand, making it Harlow's first solo number one and second overall chart-topping song after the Lil Nas X collaboration "Industry Baby". "First Class" also debuted at number one on the Canadian Hot 100, making it Harlow's first number-one song on the chart. The song debuted and peaked at number two in Austria, Germany, Ireland, Lithuania, South Africa, and also debuted within the top ten in Denmark, Finland, the Netherlands, Norway, Sweden and Switzerland. "First Class" debuted at number two on the UK Singles chart and spent 5 consecutive weeks there, blocked from the top by Harry Styles "As It Was". It spent 9 weeks in the top ten.