The gig was an 11th-hour opener for the Nickelodeon-created boy band Big Time Rush on the latter’s sold-out “Better With U” tour. One Direction had just released “What Makes You Beautiful ...

Larry Busacca/Getty Images for Nickelodeon It may have been a boy band fan's dream come true that One Direction and Big Time Rush once teamed up for a tour, but it wasn't so easy for BTR at the time.