Bono and Harry Belafonte joined African philanthropist Mo Ibrahim at Manhattan’s New Africa Center on Fifth Avenue to hear a performance by celebrated Senegalese singer Youssou N’dour.

Introducing N’dour, Bono said he has “the most beautiful voice in the world,” and added, “At the crossroads of the world, there was always a sign post pointing to Africa, and tonight the way is clearer.”

Looking enraptured, Belafonte sat in the wings while N’dour performed, telling Page Six, “He is just great.”

Also there were the Rev. Jesse Jackson, financier Michael Milken, supermodel and philanthropist Liya Kebede, former US Senator Chris Dodd, Bob Dylan’s filmmaker son Jesse Dylan, and former first lady of France Cecilia Attias.

Bono, Belafonte, N’dour and Jackson even sang “Happy Birthday” to Ibrahim’s daughter Hadeel, the co-chair of the New ­Africa Center.

We’re told the party went on until 5 a.m. Friday, while Bono popped next door to One Museum Mile and ended up taking a nap on a couch in one of the model apartments.