The basic gist: 26 letters in the alphabet, 52 weeks in a year, therefore, a letter per fortnight.
Members of the Stowey Road Port Club will choose an album from an artist/band that starts with the selected letter.
For artists, use their surname. For bands, ignore leading determiners, e.g. "The", "A", "Of". Numerics are treated as the pronounced word, e.g. "808 State" is under "E".
All other rules are made up as we go along.