Here's a photo I created as part of a publicity campaign - it's a traditional Turkish instrument, like a lute, and I bought it about ten years ago in Bodrum, Turkey.
I suspended the instrument in front of a black backdrop and then used an 80cm gridded octobox as my key light off-camera right. On the left is fill via a gridded beauty dish, making the curved back pop. I then added a small gridded flash underneath the body to give a specular highlight on the base of the bowl - this gave depth to the instrument.
I'm generally happy with it, but I'm not 100% keen on the long specular highlight on the head where the tuning pegs are. It was impossible to eliminate this because of the angle of this area compared to the body, and it's a minor thing, so I lived with it! Comments welcome as always, especially on lighting.