You are considering whether to buy a product. You look at the reviews. Would the following review decrease or increase the chances of you buying the product?
Review title: Good for parts, melodies, harmonies, etc.
Product review: If you're using a guitar, I'd recommend guitar pro. Anything else, this is the program for writing songs. It only plays in piano tone, which can be somewhat limiting, but it gives you a good idea of what something sounds like. A great idea, actually.
