Someone Like You was written and produced by Adele and American songwriter and producer Dan Wilson. It was one of the last written for 21. The track, which epitomizes the lyrical content of 21, summarizes the now defunct relationship that the record is all about.
Adele has said that it was written on her acoustic guitar, quickly, in the wake of the break-up of her 18 month relationship with the 30-year old man she thought she would marry. A few months after their split, he had gotten engaged to someone else. Adele revealed that she was struggling emotionally when she composed it.