Rock and roll continually pushes musical, social, and cultural boundaries, and the electric guitar is its iconic instrument. The acoustic version has been around since at least the 16th century.

In the 16th Century guitars only had four strings instead of six and were tuned C-F-A-D, not E-A-D-G-B-E, which is the standard tuning today. The fifth and sixth strings were added by the 18th ...