Billboard, 2020: Ed Sheeran's "Perfect" (2017) was the most recent number one hit written by a single songwriter.
Actually, we could have closed it out in December 2017, when Ed Sheeran’s “Perfect” hit No. 1; that’s the most recent song written by just one songwriter to reach the summit.
Billboard, 2020: Ed Sheeran's "Perfect" (2017) was the most recent number one hit written by a single songwriter.