clef
Granted, the black notes are difficult to distinguish from the white
notes....
It would have to be taken for granted that people would know that D
major was F# and C# and where those notes are on the stave.
C# to D in 8th notes 4ter note rest:
|/
___|)______|/|/___|____________________________________________
|___/______/|/|__|_|/_______,-.____\____________________________
|__/|______/|____|/|/____(_)`-'____<____________________________
|_/(|,\_________/|/|_____|__|______(____________________________
|_\_|_/_________/|_______|_/____________________________________
| |/
(_|
Source: https://ascii.co.uk/art/clef
