DS has ABRSM grade 6 piano coming up, and he needs help with sight singing! I don't have clue how to teach him. His piano teacher is a fantastic instrumental teacher, but isn't as good on aurals. In fact, he's just said DS should have started training years ago, as it take time to build up expertise. I'm happy to spend time at home but don't know how to go about it.
I've looked on Amazon but don't know which is the best method/books. Are there any singers out there who can help?