I got this lamp to use on a grand piano at church. The arm reaches across reasonably well from the side (though it doesn't extend far enough to be fully centered over the music desk). The multiple color temperatures and brightness levels are very helpful for accommodating the preferences of various users, and all our pianists seem to like it.It works smoothly and perfectly... in most keys.BUT if you like to play in D-flat, beware! I just discovered that the resonance point of the casing appears to be a D-flat (138.591 Hz). The plastic started buzzing quietly when playing strong tonic chords in that key. This was, of course, horrifying.I assume the same disturbing outcome holds true when playing in C-sharp major, since the identical notes are used, but I only had sheet music in D-flat today. More testing would be needed to determine whether the issue extends to enharmonic keys, but this didn't seem urgent to share here, since:? I didn't want to go into too much detail that isn't relevant to the average consumer (because we all hate that), and? Only psychos play in C-sharp major anyway.I realize this acoustic phenomenon may not affect all potential buyers of this lamp, but it seems like this particular harmonic bug could be mentioned somewhere in the description'if not in the product title itself just so that members of the five-flats-loving community have some warning.Oh, also, the buzzing stopped as soon as I moved the arm slightly, so there's that.
