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There is also an Apple version, but this has been great for us. Singing and scripture at the same time. The app plays tunes to help you learn or just sing along.
Probably you are not going to care for the suggestion, but recently we have let our 2 year old choose random selections from this app. It shows the words/music and plays the tunes so you do not even have to know them.
We let our daughter choose selections from this app.