The speaker of this song either lost someone he loved or someone said something to him that stuck with him forever. The speaker losing someone he loved seems more plausible because it talks about a woman described as the oceans daughter several times. Also, the line "my old world is gone and dead" suggests his life changed through the death of someone important to him. This is basically just someone going through the processes of grief. 1- Denial, the speaker hallucinates or imagines someone he loved and lost. 2- Anger, the repetition of the phrase "cant get it out of my head" gives off a frustrated tone. 3- bargaining, if the speaker is acting like robin hood, William tell, ect., its because they think it will resolve their problems. 4- depression, the speaker seems to be happiest In their dreams, which could be a sign of depression. 5- acceptance, this is the only stage the speaker does not seem to go through.