Singing and playing have been tied probably since the beginning of music because the voice is the original (and still is) instrument. The desire to sing has to a great extent been suppressed in our modern world mainly I think due to the deification of popular singers many of whom barely have a voice but because of their celebrity have defined voice. Singing gets you out of your shell. It discloses your self-consciousness, it raises your energy, it ties you to something "inside". Sing gently, simply and discover your voice and the spirit behind it. And as soon as you can nail a song, POST !