"That's It For The Other One IV: We Leave The Castle" is a song by the American rock band, Grateful Dead, from their 1968 album "Anthem of the Sun." The lyrics, the fourth and final part of a larger composition, are open to interpretation and can be seen as surreal and abstract. The lines you mentioned, "And when the day had ended, with rainbow colors blended. Their minds remained unbended. He had to die, oh, you know he had to die," suggest a sense of conclusion and acceptance. The imagery of rainbow colors represents a feeling of unity and beauty. The phrase "their minds remained unbended" implies that despite the experiences and challenges they faced throughout the song, their thoughts and perspectives stayed open and free. The line "He had to die, oh, you know he had to die" can be seen as a reference to the cyclical nature of life and death, highlighting the inevitability of mortality. As the title suggests, the lyrics evoke a feeling of leaving behind a castle, symbolizing a departure from a familiar or safe place. It can represent a journey, either physical or metaphorical, into the unknown. The song overall embraces the idea of change and transformation. However, it's important to note that Grateful Dead's lyrics often invite individual interpretation, encouraging listeners to find their own meanings within the words. The band valued musical improvisation, and their lyrics often reflect that same sense of spontaneity and creative exploration.
