One of my favourite meditations is on the human hand. It introduces a number of concepts that will be new to those who have not pursued a study of deep meditation, and is especially relevant to those who play musical instruments.
It's best to begin by doing this before going to sleep of an evening. Sit comfortably in your bedroom, relaxed but alert. Take a few slow, deep breaths and clear the mind and heart of distractions.
Now raise both hands to eye level, and rotate them slowly, allowing a clear image of their shape to form in the mind. As you are doing this, recall all of the many things that your hands can do. In my own case this includes:
Lower the hands into the lap. Now think how different life would be if we had no hands. From this will arise a spontaneous feeling of wonder and gratitude for such marvellous bodily appendages. Let your mind dwell on the question, "Who first imagined and created human hands?"
At this point my concepts will be different from yours because of our different cultural backgrounds. I will explain my own ideas, and you are free to think about them, to modify them according to your own understanding, or to substitute ideas of your own.
Human hands were first conceived by a "high level" spiritual entity who is named The Manu in Vedanta:
However, my own understanding of him differs from both Vedic and Hindu ideas. I regard him as an aspect of the Solar Logos, an even "higher level" entity that created our Solar System, its Sun and planets, and the life that arises within it. Every star is a creation of its own Solar Logos, and those star systems (sc. solar systems) in which human life has arisen each has its own unique Manu aspect and entity.
Whatever ideas you use, allow the feeling of gratitude in your heart to "flow out" to whatever being you conceive as having imagined and created human hands. If you have never done this before, the result may surprise you. Such "high level" entities "reflect back" strong emotions directed at them, and after a while you will find yourself sinking into quietly joyful contemplation – the stage between ordinary and deep meditation. Quite likely you will then fall asleep. If you are experienced in meditation you will remain awake longer, sinking into deep meditation.
Sometimes this meditation produces interesting dreams, but usually you will enjoy a deep, dreamless but refreshing sleep.
It will also assist in training your hands for musical practice by making you more aware of their functioning.