"On a Clear Day (You Can See Forever)" is the title song from the 1965 Broadway musical of the same name, with music by Burton Lane and lyrics by Alan Jay Lerner. The show, loosely inspired by the 1926 play Berkeley Square, tells the story of a woman with extrasensory perception and past-life memories, and the soaring optimism of the title song captures its themes of clarity and boundless vision. Lane's melody is characterized by bold, uplifting phrases with unexpected harmonic turns that reflect the compositional craft he developed under the early mentorship of George Gershwin. Lane and Lerner had previously collaborated on the 1951 film Royal Wedding, and this musical earned Tony nominations for Best Original Score despite the show itself receiving mixed reviews for its elaborate staging and convoluted plot. The song transcended the modest run of the original production, gaining wider recognition through Barbra Streisand's performance in the 1970 film adaptation and recordings by artists including Robert Goulet. A 2011 Broadway revival starring Harry Connick Jr. reintroduced the score to new audiences. In jazz circles, the tune has become a durable standard, valued for its strong melodic architecture and the harmonic interest that rewards creative interpretation by instrumentalists and vocalists alike.