The document discusses how various musical artists, including The 1975, Ed Sheeran, and Passenger, employ consistent conventions in the visual design of their album packaging and promotional materials like tour posters. This helps develop a clear, recognizable identity and brand. Common techniques mentioned include using consistent color schemes, fonts, and imagery that tie the different materials together and convey the tone and style of the artist. Simplistic, retro-inspired designs are often employed to match the intended aesthetics and target audiences.