Conversation so far:
What was the first thing Esma Redžepova did after the independence of Macedonia?
After North Macedonian independence in 1991,  Esma Redžepova toured the United States the year after, performing at a series of benefit concerts.
Did Esma Redžepova's tour of the United States a year after North Macedonian independence in 1991 do well?
What else did Esma Redžepova do in her career after the independence of Northern Macedonia besides tour the United States?
Esma Redžepova gained a more modern image and redefined herself as a worldbeat artist. For instance, she made several collaborations with young pop singers

Question: Who were some of those singers?
Self-contained rewrite: Who were some of those singers Esma Redžepova collaborated with to gain more of a modern image?