My favourite compiler, I love the bank holiday specials but have to agree too easy for a Guardian prize . My first visit to forum was when I finished ,usually it is for hints/clues or help with parsing. COD 14d.
PDS @47
.... or you could refer to the Latin poem included here: https://en.wikipedia.org/wiki/Solf%C3%A8ge#:~:text=In%20music%2C%20solf%C3%A8ge%20(%2F%CB%88,sight%2Dreading%20of%20Western%20music.