This is not your thoughts. Intuition is found in the spaces between your thoughts. Intuition knows where energy lies and will guide you in the right direction. Because intuition is between your thoughts, it is most available when you are not thinking. It doesn't make sense to the logical mind, but it always makes sense to the artistic mind.
All writers experience writer's block.
We were told to see these blocks as input time. Forcing a song that won't come may be your intuition telling you the song needs time to grow. Meanwhile, you should go out and live. Be in your life. Soak up experiences.