It seems that if you're worth your salt
in certain progressive rock
circles, you have a logo
that is your band name
in some sort of flowery script
often interspersed with symbols
or with the logo turned into a symbol. This logo is then used on album covers
, and whatever else to help forge a unique identity for the band.
Perfect examples include Yes (they've been through 4 or 5), Styx, Marillion, Kansas, old Rush, Fish, etc.
Also related are stylized heavy metal band name logos.