“Hello” is a song by English singer Adele. It was released on October 22, 2015 XL Recordings as the lead single from her third studio album, 25 (2015). Adele co-wrote the song with his producer, Greg Kurstin. “Hello” is a piano ballad with soul influences and lyrics that deal with themes such as nostalgia and regret. Upon release, the song was well received by music critics, who compared it favorably to Adele’s previous work and praised the lyrics and Adele song. It was recorded in London.
“Hello” reached international commercial success, reaching number one in almost every country the maps in, including Britain, where it became her second UK number one single, after “someone like you”, and has the biggest opening week sales in three years. In the United States, “Hello” debuted at the top of the Billboard Hot 100, Adele became the fourth number one on the chart and breaking several records, including becoming the first song to sell over one million digital copies in one week. At the end of 2015 it had sold 12.3 million units globally (combined sales and tracks the corresponding currents) and was the year’s seventh biggest selling single. 
The accompanying music video directed by Xavier Dolan and co-stars Adele and Tristan Wilds. The music video for the song broke Vevo record by achieving over 27,700,000 views within a 24-hour span was held previously by Taylor Swift’s “Bad Blood”, which collected 20.1 million views in this time frame. It also broke the record for the shortest time to reach 100 million Vevo views, which were previously held by Miley Cyrus’ “Wrecking Ball”, as well as the shortest time to reach 1 billion YouTube views (88 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 BBC One hour long special, titled Adele at the BBC.