Here is some information if you consider buying this double promo record to get hold of the two additional mixes that aren't available on the mixes CD. You should know that the "Biff And Memphis Club Edit" is nothing more than a short version of the "Biff And Memphis Club Mix", and that the "Biff And Memphis 7" Version" is just shorter than the "Biff And Memphis Club Edit". And that's all.For example, don't expect the "club edit" to be a club only version without the ambient beginning and ending of the full mix, like I did.In my opinion, one of these 'Biff and Memphis' short mixes is pointless.