Big Time Rush

Big Time Rush (also known as BTR) is an American boy band who first found fame with their TV series Big Time Rush which aired in 2009. The band consists of Kendall Schmidt, Logan Henderson, James Maslow, and Carlos Pena, Jr. The group was signed a record deal with Nick Records simultaneously with the television series, and because of production and musical rights to the show, the group was eventually signed to Columbia/Epic Label Group.

source: Wikipedia