Younger Than Springtime it was sung by John Kerr miming to a vocal by Bill Lee. Hammerstein used repetition as a key aspect of the song repeating the words "am I" and "are you" when describing Cable and Liat: "softer than starlight", "gayer than laughter" and "younger than springtime". The song is written in F Major. Younger Than Springtime "Younger Than Springtime" is a show tune from the 1949 Rodgers and Hammerstein musical "South Pacific". It has been widely recorded as a jazz standard. The song is performed in the first act by Lieutenant Cable when he makes love to his adored Liat,
Younger Than Yesterday trumpet solo featured in the song, which represented the first use of brass on a Byrds' recording. Masekela and the Byrds would later perform "So You Want to Be a Rock 'n' Roll Star" together at the Monterey Pop Festival on June 17, 1967. McGuinn and Crosby's songs, written both separately and together, represented an expansion of the jazz influences and psychedelia that had been featured heavily on the band's previous album. The song "C.T.A.-102", named after the CTA-102 quasar and written by McGuinn and his science-fiction-minded friend Bob Hippard, was a whimsical, but ultimately serious song that speculated on