“Hello” is a song by British singer-songwriter Adele, released on 23 October 2015 by XL Recordings as the lead single from her third studio album, 25 (2015). Adele co-wrote the song with her producer, Greg Kurstin. “Hello” is a piano ballad with soul influences, and lyrics that discuss themes of nostalgia and regret. Upon release, the song was acclaimed by music critics, who compared it favourably to Adele’s previous work and praised the song’s lyrics and Adele’s vocals. It was recorded in London’s Metropolis Studios.
“Hello” reached number one in almost every country it charted in, including the United Kingdom, where it became her second chart topper, following “Someone Like You”, and has the largest opening week sales in three years. In the United States, “Hello” debuted at the top of the Billboard Hot 100, reigning for 10 consecutive weeks whilst becoming Adele’s fourth number-one on the chart and breaking several records, including becoming the first song to sell over a million digital copies in a week. By the end of 2015, it had sold 12.3 million units globally (combined sales and track-equivalent streams) and was the year’s 7th best-selling single while it stands as one of the best-selling singles of all-time.
The accompanying music video was directed by Xavier Dolan and co-stars Adele and Tristan Wilds. The music video for the song broke the Vevo Record by achieving over 27.7 million views within a 24-hour span, held previously by Taylor Swift’s “Bad Blood” which accumulated 20.1 million views in that timeframe. The record was then later broken by Swift in 2017 for the video for her song “Look What You Made Me Do” which gained over 43.2 million views in the timeframe. “Hello” also broke the record for shortest time to reach one billion YouTube views (87 days). The clip received seven nominations at the 2016 MTV Video Music Awards, including Video of the Year and Best Female Video. Adele promoted the song with a live performance on a BBC one-hour-long special, entitled Adele at the BBC. At the 59th Annual Grammy Awards, “Hello” won three Grammy Awards: Record of the Year, Song of the Year, and Best Pop Solo Performance. At the 36th Brit Awards, “Hello” won British Single of the Year and was nominated for British Video of the Year.