Board Thread:Spoilers!/@comment-27060727-20170222030619/@comment-27060727-20170504005218

I mean, Josh has 11 years of theater experience, which Ginny does not. Clearly him and Colin have a huge advantage over the others, having had musical careers before OUAT. They have been employed to sing.

Ginny has made it clear that she is not a singer and wanted to be in the background, but then pushed herself to do it anyway. And I think she has a really sweet voice :)