It seems that it's the "power trio" instruments -- guitar, bass, drums -- that have gotten the most attention in rock music. But we shouldn't overlook the fact that there has been some memorable music made by those musicians who labor over a hot keyboard -- piano, organ, mellotron, synthesizer. Here are ten of the best-known rock keyboardists. Vote for your favorite, or add another choice by posting your comments in the About Classic Rock Discussion Forum or the About Classic Rock Blog.