While doing massage some years ago, my hands found spots that particularly needed working on and they started vibrating over those areas. There are techniques we learn, others come to us and as long as they produce results surely it is all good.
This is my own healing gift where the hands vibrate intuitively and quite strongly over parts of the body needing attention. The movements can be accompanied by sound.
This technique is used as an adjunct to the other techniques when called for and in agreement with client.