Compose a melody with 3 notes.
Here is a simple melody using three notes:

C, D, E (played in quarter notes, in the key of C major)
Complete the following task based on the instruction and optional input provided.### Instruction:
Compose a melody with 3 notes.

### Output:
Here is a simple melody using three notes:

C, D, E (played in quarter notes, in the key of C major)