I’ve watched a small number of porn films. The ones that tried to have a story were the worst- those involved should have spent some money on acting lessons rather than silicone and gym memberships.
So 9 Songs isn’t really porn. It has actual actors and a story that isn’t ludicrous.
There are other reasons the film isn’t porn. Sex isn’t the only thing that’s going on. The scenes aren’t sharply lit and the actors don’t contort so the camera can see all the details.
All in all it’s the sort of thing I’ve felt should have been made for a long time. It’s a love story that isn’t coy about what goes on in the bedroom. There could be a market for this sort of thing, but I don’t see much of it being done that doesn’t veer quickly into the cliches of porn. In the mean time, if you want intelligent stories with a healthy amount of realistic sex (even if it is between anthropomorphic animals) I recommend trying Omaha the Cat Dancer.