The Siren oleh M.R. Graham

"There was a dead body on Sandie's back porch, and it was trying to get in."

But this is no zombie; something stranger is hiding inside the rotting shell. What do you do when you meet an injured alien spirit that feeds on emotion and can play human feelings like a violin? Name it John Doe, give it a guitar, and move heaven and earth to help it get home, if Sandie has her way. She doesn't realize that babysitting an alien could result in such a weird collision of music, emotion, and faith.
And Sandie must tread with care, because this thing has the power to manipulate minds, and even the creature itself doesn't know what will happen when it finally heals.