Emerson later bought a second GX - 1 from John Paul Jones of Led Zeppelin .
Emerson later used parts from it to repair his original GX - 1 , which was damaged by a tractor crashing into Emerson 's home studio .
Emerson later bought a second GX - 1 from John Paul Jones of Led Zeppelin , and used parts from it to repair his original GX - 1 , which was damaged by a tractor crashing into Emerson 's home studio .