Really? I thought it was "coffee for your wife/girlfriend." Snap! Time to go edit all my posts...
But seriously, what Dan said, and I'd add for relevancy to this topic that single origin coffees generally have less taste balance or body than a professional espresso blend, because it's rare to find coffees that have both of those traits in and of themselves (as espresso). In the case of the above, the Sidamo was a superb and super-bright coffee, and it
should come off as a nice spicy or berry fruitiness, but if your grinder isn't up to the task, or your brewing parameters are all wrong, it can come off as battery acid, sour salt, etc.
There's a whole lot more to say about that, but if you want to do further research it's probably best to use the search feature of the forum; I think you'll find a lot on the topic.