By Kate Ward
February 18, 2012 at 04:21 PM EST

Though Aretha Franklin was originally on tap to sing “The Greatest Love of All” at Whitney Houston’s funeral Saturday, the Queen of Soul had to cancel her appearance. CNN reports a rep for the singer says Franklin is too ill to perform. UPDATE: People reports Franklin said leg spasms kept her from appearing and performing at the funeral. Said Franklin in a statement: “Regretfully, I am so sorry that I was unable to be with you at Whitney’s service today. I had every intention of being there. But unfortunately I had terrible leg spasms and locked leg muscles until 4:00 a.m. this morning following my concert last night, which I’ve been having for the last few days … I feel it necessary and very important to stay off my leg today as much as possible until concert time this evening. My heart goes out to my dear friend Cissy, Dionne, Bobbi Kristina and the rest of the family. May God keep them all.”

The funeral — which is being held at the New Hope Baptist Church in Newark, N.J. and is being broadcast and streamed online live — will, however, still feature performances from Alicia Keys, R. Kelly, Stevie Wonder, Kim Burrell, and BeBe Winans. Houston’s cousin Dionne Warwick, Kevin Costner, Clive Davis, and Tyler Perry are expected to speak at the funeral.

Read more:

Whitney Houston’s funeral to be broadcast and streamed online

This Week’s Cover: Whitney Houston’s life and legacy

Photo Gallery: Whitney Houston: Her Highs and Lows