*Michelle Williams has fulfilled the wish of a terminally ill youngster by recording a song that he wrote, titled “Make It Last.”

The former Destiny’s Child singer teamed up with Sam Campbell, who suffers with brain defect Chiari Malformation, to lend her vocals to his original lyrics

“Sam’s song is really good! I wasn’t writing like that at the age of 15,” Williams told OK magazine. “.I have to step my game up, for real!”

Williams, who recently fired her Music World Entertainment manager Matthew Knowles, is currently working on her fourth solo studio album. She is also preparing a seven-week return to Broadway as Roxie Hart in Chicago, from Feb. 8 through Sunday, March 28 at the Ambassador Theatre (219 W. 49th St.).