The lyrics describe a narrator who arrives at a familiar place but feels like it's a different world to perform in. Despite the applause from the crowd, the narrator feels disconnected and decides to slip away with a mysterious woman to enjoy some drinks. They hide behind a rainbow until they have finished.

Meaning of "Rainbow Blues" by Jethro Tull

"Rainbow Blues" by Jethro Tull can be interpreted as a reflection on the illusion of success and the emptiness that can accompany it. The narrator arrives at a performance venue and despite the external signs of achievement - the applause, the encore requests - they feel a sense of disconnect and longing for something more genuine. This is symbolized by the rainbow, a beautiful and fleeting phenomenon that the narrator and the mysterious woman hide behind, suggesting a desire to escape the superficiality of their current situation. The drinks consumed can be seen as a form of escape from reality, a temporary way to numb the dissatisfaction and uncertainty creeping in. The song's message seems to caution against getting caught up in the glitz and glamour of success without considering the authenticity and meaning behind it, urging listeners to seek deeper connections and purpose beyond the applause and accolades.