Tammi Terrell’s good friend Marvin Gaye attended her funeral with the permission of Terrell’s mother. According to Dr. Ernest Garrett, Terrell’s fiancé, everyone else from Motown Records was banned from attending the funeral due to Terrell’s issues with the company. Gaye delivered the final eulogy at the funeral, while their duet song “You’re All I Need to Get By” played in the background.
In late 1969, Gaye spotted an ill Terrell in the audience during a performance at the Apollo Theater. Terrell, who weighed less than 90 pounds, stood up to begin singing her opening response to Gaye from their song, “You’re All I Need to Get By.” Gaye, who was performing at the show with Carla Thomas, stepped off the stage and into the audience to sing with Terrell. The performance ended with a standing ovation, and it became Terrell’s final public appearance.
The duo of Terrell and Gaye enjoyed success with four hit singles that became some of Motown Records' top love songs. In October 1967, only six months after the “Ain’t No Mountain High Enough” single. Terrell collapsed onstage during a live performance. In March 1970, Terrell died of complications from the brain tumor that caused her collapse.