Mariah Carey , Stevie Wonder , Lionel Richie , Jennifer Hudson , Usher , Jermaine Jackson , and Shaheen Jafargholi sang Vocalizations Jackson 's songs , and John Mayer played guitar .

He started Process_start the show with the presence of Anahí , sang Vocalizations together at `` Via Funchal '' ( São Paulo ) and `` Vivo Rio '' ( Rio de Janeiro ) .

There were two separate shows , however , sang Vocalizations two songs together , `` Feliz Cumpleaños '' and `` Libertad '' .

Beyoncé also sang some of her previous hits from her three prior studio albums as well as songs she recorded Recording with former girl group Destiny 's Child in the 1990s and early 2000s .

here she sang Vocalizations `` over the hills and far away '' as a duet featuring nightwish 's vocalist floor jansen .