Castalia Communications' posters have been putting answers up on the walls for generations of musicians. The original Guitar poster is still the most complete guide to the guitar ever made. It contains a wealth of information for all guitar...

Castalia Communications' posters have been putting answers up on the walls for generations of musicians. The Key Signatures poster is a mini-poster of the treble key signatures is an enlargement of the famous "Guitar Player in the Clouds" from the...

Castalia Communications' posters have been putting answers up on the walls for generations of musicians. This Rock Guitar poster shows how to play the hard rock and heavy metal lead and rhythm guitar used by today's rockers. The poster explores...