The famous 1937 song "Over the Rainbow", written for the musical motion picture "Wizard Of Oz" and sang by the young Judy Garland, tells, carried by the hope and optimism in the tune, about the dream of a place far away, free of all trouble.
In modern terms, the rainbow theme in the lyrics matches the multicolored flag — the representation of inclusion at pride marches. In the context of June as Pride Month, we're picking up this symbolism of the LGBTQ+ community.