Context: This joke was told to over the phone by an older relative of mine

Background: This relative has been teaching music for 15+ years at a small liberal arts college.
A violist comes home one day and sees his home is burned down. The policeman says, “Conductor came, killed your family, and burned down your house.”
The Violist says, “The Conductor came to MY house?!”

This joke plays on the idea that Violists are very timid, and would not typically be noticed or acknowledged by the conductor.