Which logical fallacy is used in the text?
Sofia wants to play a guitar solo on our next recording. Her father is a horrible musician, though, so I doubt that Sofia's any good either.

 - circular reasoning: an argument that supports a claim with the claim itself
 - guilt by association: a negative association intended to discredit someone or something
The text argues that Sofia must be a bad guitar player, because her father is a horrible musician. However, even though Sofia's father is a horrible musician, that doesn't necessarily mean that Sofia is as well. This illustrates a type of logical fallacy known as guilt by association.