Hello is a hit single by Adele released in 2015 as the lead single from her album 25. The opening line became especially memorable online because it is instantly recognisable even in very short clips. It spread through reaction videos, parody edits and social posts where creators used the lyric to frame surprise returns, emotional check-ins and intentionally overdramatic jokes. The sound remains popular because the delivery is clear, familiar and easy to match with captions or a sudden visual reveal.