Jennifer Holliday, the Tony-award winning singer who on Friday said she planned to sing at an inauguration-related welcome concert next week, on Saturday changed her mind, citing opposition to her appearance from the gay and lesbian community.

Ms. Holliday, in a letter she provided to The Wrap, an entertainment news website, said she would no longer take part in any events affiliated with the inauguration of Donald J. Trump as president. Her decision to withdraw, she said, was influenced by an article in The Daily Beast about how her planned appearance was heartbreaking to her gay fans. She also retweeted an op-ed piece in the Boston Globe describing Mr. Trump’s cabinet nominees as “a who’s who of homophobia.”

“I sincerely apologize for my lapse of judgment, for being uneducated on the issues that affect every American at this crucial time in history and for causing such dismay and heartbreak to my fans,” she wrote.

“Please know that I HEAR YOU and I feel your pain,” she added. “The LGBT Community was mostly responsible for birthing my career and I am deeply indebted to you. … You have loved me faithfully and unconditionally and for so many years you provided me with work even though my star had long since faded.”