discs 3, 4, and 5 did not work. I think if they did I might have liked the whole package...but given the price and fact that I wanted all the discs to work...(crazy idea...I know) ..I sent it back to amazon. they refunded my money promptly, but the product is kinda just ok if you ask me. I have been using pimsleur 3a and 3b and I love them...not so keen on 2a and b.