is also known as the G-clef, which gives you the first clue to its origin. 12th century music notation showing neumes and a single-line staff (image: wikipedia) So for my own edification ...

Working from bottom to top, the note names for the lines on the treble clef are E, G, B, D & F. This can be remembered as ‘Every Green Bus Drives Fast’, whereas the spaces conveniently spell-out the ...