If you didn't know the title of their second song and began by listening to only the sound of their voices you'd be expecting something along the lines of the first song, until you hear the lyrics. "Shit Makes The Flowers Grow" gives answer to the question every woman has asked at one time or the other of a particularly useless boyfriend: what purpose do you serve?

The vocals and the harmonies are as pure and sweet as any nice country girl could make it and the lyrics are hysterical (listen for Papa Willie supplying a very specific vocal harmony on this number – it's one word only so if you're not careful you could miss it). This song is only the beginning as Amy and Cathy demonstrate time and time again that not only are they wonderful singers and clever songwriters they have a wicked sense of irony.

But what really makes songs like "Motherfucker Got Fucked Up" work isn't the crassness of the language but their ability to play everything straight. You can't tell from the tones of their voices or the sound of the music whether the song you're going to be listening to is a sweet song like "Try To Say Goodbye" written by Jackie Guthrie or the satirical "In Case We Die".

While the former depicts the break-up of a relationship in real terms, the latter pokes fun at the idea of being scared of the future with lines like "We could trip over our own feet, or how about the psychos we could meet". In view of all those potential hazards it only makes sense to "kiss me one more time before you go".

Country music has long been the butt of people's jokes but usually it is sung by people who don't have the affection and respect for the music that Cathy Guthrie and Amy Nelson have. These are intelligent and well-crafted songs that show respect and admiration for the genre and that makes the songs twice as funny. Of course Folk Uke is also the first folk album I've seen that carries a parental advisory warning on the cover – so don't let your parents listen to it until you think they can cope.