A piano player obviously cannot use a hand held microphone. From that I have seen in various shows, it is possible to use
- a bigger microphone what is attached to the stand and positioned in front of the performer, or
- a headset - like microphone that is much smaller and attached to the head of the performer.
While a piano player needs no freedom to run around, the keyboard is rather wide so with the fixed microphone the head is unlikely to be always same distance from the mic. How much is this the issue? From the other side, headset microphones look somewhat unusual, optimized for wireless transfer that seems redundant and require converters even to plug into standard XLR jack with phantom power. Headset microphones seem taking a more narrow price range: they are not exactly cheap, however prices do not go a high as for the best free standing microphones.
Which of these two setups is considered optimal and more professional, are any know positive and negative sides?
For the simplicity, let's set recording of the piano sound aside. It probably needs separate additional microphones anyway, or (if digital) may need no any.