Question: What singer is the backstreet boy that worked on the show "boy band" the older brother of? 
Related documents: [0]  [DOC] Nickolas Gene "Nick" Carter (born January 28, 1980) is an American singer, songwriter, actor, and dancer. He is best known as a member of the pop group the Backstreet Boys. As of 2015, Carter has released three solo albums, "Now or Never", "I'm Taking Off" and "All American" during breaks between Backstreet Boys schedules, and a collaboration with Jordan Knight titled "Nick & Knight". He has made occasional television appearances and starred in his own reality shows, "House of Carters" and "I (Heart) Nick Carter". He gained fame in the mid 1990s and early 2000s as a teen idol. He is also the older brother of singer Aaron Carter and the late Leslie Carter. [END] 
[1]  [DOC] In Real Life is an American boy band composed of Brady Tutton, Chance Perez, Drew Ramos, Sergio Calderon, and Michael Conor, the final five vocalists from the American reality television music competition series "Boy Band." The show premiered June 22, 2017 on ABC with hostess Rita Ora, and "architects" Backstreet Boys' Nick Carter, the Spice Girls' Emma Bunton and Timbaland. [END] 
Answer: 
Aaron Carter
Aaron Carter