You post a song lyric here, you post it to the Forum. Not the DT. If people could post songs (particularly their own) directly to the DT, it would quickly become unmanageable: the world's biggest vanity publisher. Songs may eventually be 'harvested' for the DT, or they may not. See the site FAQ for full details.

A new song lyric without its music isn't terribly useful. Posting the music would add to its value as a resource. Again, see the FAQ for information on the most effective ways of doing this.