There is only one source for this work, written on four pages of manuscript paper torn from a music manuscript book. It is undated, but judging from the paper and the handwriting - and the very old London telephone number at the top of page 3 - it looks like a student work from c1979, which Reddy wrote while he was writing other pieces based on Bach’s surname. This one is a sketch of ideas towards a serial work using those four letters that intersperses completed bars with workings out of the row. Some of the bars are numbered, and it is possible for scholars or even performers to figure out how the piece might be developed had Reddy worked further on it. There are three numbered pages and a double bar on page 3, suggesting that it ends there, but another page exists as further working out, which is included her as page ‘4’.