They go together. They live in perfect harmony.
Speaking of musician jokes, here's one from Nicko of Iron Maiden.
So a guy goes to the hospital to get his brain scanned and suddenly goes unconscious. He wakes up in a hospital room and the doctor is there. The doctor says, "Mr. Erickson, I have some good news and some bad news, which would you like to hear first." The guy thinks for a minute and says, "Well, let's hear the bad news." "Well, during your brain scan we discovered a massive tumor and had to perform an emergency lobotomy. We removed 7/8ths of your brain." The guy is stunned, but thinks for a second and asks "well then, what's the good news?" And the doctor replies "We bought you a bass guitar."