Logo created for music and literature compilation series, with fold-out pamphlet cover art

PCM \ˈpē-cē-əm\ acronym. pulse code modulation, a method of digitally representing analog audio

grapheme \ˈgra- fēm\ noun. unit of a writing system, such as a letter

Following the concept of codes and symbols, each cover of PCM Grapheme featured a message written in an arcane or obscure visual language