Ed Sheeran does not have a specific key that he is "in." The concept of a key applies to individual songs, not artists. Each of Ed Sheeran's songs is written in a specific key, and he often uses a variety of keys throughout his discography.
For example:
- "Shape of You" is in the key of C major.
- "Thinking Out Loud" is in the key of G major.
- "Perfect" is in the key of A major.
To determine the key of a specific Ed Sheeran song, you can refer to online resources like songkey.com or musictheory.net.