In 1959, still at college, Greenwich met the man who became her husband and main songwriting partner. Although it is possible they had been acquainted as children, since they shared a relative, the first time Greenwich and
Jeff Barry met formally as adults was at a
Thanksgiving dinner hosted by her maternal uncle, who was married to Barry's cousin. Greenwich and Barry recognized their mutual love of music. Barry was married at that time to his first wife, who was at the dinner, but he and Greenwich married several years later and became a songwriting duo recognized as one of the most successful and prolific among
Brill Building composers. Greenwich and Barry began dating after his marriage was
annulled, but musically they continued separate careers. Morton, Barry and Greenwich penned "You Don't Know," which Greenwich recorded on Red Bird under her own name in 1965, at the same time Barry recorded and released another Barry–Greenwich tune, "Our Love Can Still Be Saved". However, the couple's marriage could not be saved; before the end of the year, Barry and Greenwich divorced. The couple continued to work together for much of 1966, partly due to Greenwich's discovery of a talented singer-songwriter named
Neil Diamond. Barry, Greenwich and Diamond joined to form Tallyrand Music to publish Diamond's songs. Diamond was subsequently signed to
Bert Berns's
Bang Records, and had several hits such as "
Cherry Cherry" and "
Kentucky Woman", all produced by Barry and Greenwich, who also sang backgrounds on many tracks. In addition, Barry and Greenwich teamed with Phil Spector one last time to pen "
I Can Hear Music" and "
River Deep - Mountain High". "I Can Hear Music" was recorded by
The Ronettes in 1966 as their final single for the
Philles label, and recorded by
The Beach Boys in 1969. Spector produced "
River Deep - Mountain High" for
Ike and Tina Turner, although Ike did not play on the song - accounts vary between Spector's Rock and Roll Hall of Fame speech in 1991, that he did not turn up to the studio when invited, to others claiming he was officially banned from the studio recording. Although "River Deep" peaked at No. 3 in the UK, the song was a commercial failure in the US, stalling at No. 88. A few years later, in 1970–71,
The Supremes and
The Four Tops had a No. 14 (U.S. chart) hit with their revival of "River Deep". ==Later career==