The song "Seven By Seven" by Hawkwind is about a person's journey through the astral plane, which is a realm beyond our physical world. The song's lyrics suggest that the journey is difficult, and achieving access to this plane requires a key or passport that can only be obtained through the astral soul. The seven signs mentioned in the song refer to the steps one must take to find the "long lost bards," who are likely spiritual guides or masters that can help one navigate the astral plane. However, the journey is not without obstacles and dangers. The character named Pocus in the song seems to represent an entity that seeks to prevent the protagonist from accessing the astral plane, cursing them along the way with seven fears that must be overcome. In the end, the protagonist has achieved their goal and is now able to travel through the astral plane freely. Overall, "Seven By Seven" is a poetic exploration of the mystical and spiritual journey of accessing the astral plane, with its ups and downs, trials and triumphs.