"Hello" is a song recorded by English singer-songwriter Adele, released on 23 October 2015 by XL Recordings as the lead single from her third studio album, 25 (2015). Written by Adele and with its producer, Greg Kurstin, "Hello" is a piano ballad with soul influences (including guitar and drums), and lyrics that discuss themes of nostalgia and regret. Upon release, the song garnered critical accl

def hello
  return "hello"
end