ADDITIONAL INFORMATION ON THE FEUDS WITH LUTHER, ANITA & EN VOGUE:
We all know about the disagreements Luther Vandross had with tour mates Anita Baker and En Vogue but did you know this: Anita Baker and Luther Vandross had cooled off significantly since the "Heat" tour, several years earlier. They talked and came to terms with their former grievances. Luther admitted, it always bothered him that she wouldn't sing a duet with him, Baker apologized for not explaining to him about her pregnancy (at the time).
Luther understood and felt that what they needed to do was record a duet to squash all the talk they they hated each other. He suggested they pair their voices on a cover of Ben E. King's "I (Who Have Nothing) Anita thought it was a good idea and agreed to do it. However, on the day they were scheduled to record in Los Angeles, she was nowhere to be found. "She simply didn't show up," Luther said. Their up-and-down relationship had once again taken a fall. Instead, Vandross recorded the duet with Martha Walsh.
Things got so bad on tour with En Vogue, that a curtain was put up to separate them and Luther. While on tour in Miami, Luther saw that a member of En Vogue had wandered over to "his side" of the drawn curtain. His temper hit full-tilt and he "actually" called the Miami police to demand the group be charged with trespassing.
Source: "Luther: The Life and Longing Of Luther Vandross" by Craig Seymour