We are in a break down situation....

Last week, I had to call out the AA man when my car wouldnt start in the morning. Then 2 days later it went into the garage and failed its MOT. Oh no... panic stations. Its all been fixed now and I am back on the road. As a treat I took it through a car wash today. I bought Now Thats What I Call Music 35 on cassette from a charity shop, to play in the car .... only to find out that Now Thats What I Call Music 42 was inside the case!!!!!!