How to write a review.
I'm not saying all the things I list here have to be in every review that anybody writes. But it wouldn't hurt to include most of them.
1. Point of view.
Does the music present any issues? What was your strongest impression of it? Was there one moment that stood out? What was your opinion? Did you like it, hate it, feel indifferent to it? The review should be built around your discussion of all this. Pick specific details to discuss that illustrate your overall point. If you're not sure what you think, then that can be your point of view -- as long as you make clear why you don't have a conclusion, and how you feel about that.
2. Musical details.
You need (most of the time, anyway) to make at least a few comments about objective musical facts -- things about the composition or performance. These serve to illustrate and justify your point of view. Why did you form your opinion? What happened at the concert to make you feel the way you did? Or what didn't happen?
3. Evocative impressions.
Consider using personal, even poetic ways of talking about the music. Instead of saying “The tenor had a big, loud voice,” you might say, “The tenor sounded like a teenager with raging hormones”—if, of course, that’s how you heard his singing. (The great mystery writer Raymond Chandler wrote a scene where a really big man comes into a detective’s office. The detective, describing this, doesn’t say, “He looked really big and rough.” He says: “He looked like he could hit me with my desk.”)
Comments like these help readers without a technical knowledge of music. They also help reach people who aren’t normally interested in classical music, because by using images they easily understand, you show that you live in the same world they do. And no matter who you’re talking to, a little poetry helps to bring your point of view alive. Maybe the articulation of the string playing was remarkable, but why should we care? Find a way to describe it that makes us care.
Another way to put this: Tell a story about the music. Don’t just list its good and bad points. (That’s easier when you’re reviewing a concert than it is when you review a recording. A concert, after all, is an event, in which things happen. A recording just sits there.)
4. Follow through on your ideas.
If you ask questions about the concert, or about issues it seems to raise, make sure you answer them, or at least find things about the concert that illustrate what you're talking about. Don't let important thoughts or opinions just hang there. Don't just state your opinion once, and spend the rest of the review describing things that happened.
5. Make sure you have an opinion!
Yes, I already said that, in the first point. But I'm repeating it, because we've all seen how unsatisfying reviews can be if the reviewer doesn't seem to have a strong opinion. What did you think about the concert? How did you feel about it? If you're not sure, it's still possible to have feelings about the very fact of not being sure. Did you end up wanting to know more about whatever left you uncertain? Did you feel, in the end, that the whole problem was academic, that nothing about the music made you care? Or was your lack of a definite opinion troubling, because the music raised important issues for you? A discussion of these points can sometimes be even more interesting than a definite viewpoint.
As I've said, not all of these points have to be in every review. And -- depending on what you're writing about – some of the points, in a given review, will be more important than others. If you want to say a really famous pianist isn't nearly as good as his or her reputation, then it probably helps to have lots of objective data. If you want to say why a performance moved you very deeply, it helps to have evocative impressions, so we understand what your feelings were. If you're reviewing a new composition in an unfamiliar style, it probably helps to discuss ideas -- what kind of style it is, how it relates to other styles, how hard or easy the style is to listen to. Use your judgment. But if you include most of the points I've listed here, you can't go too far wrong.