back·stage 
/ˈbækˌsteɪʤ/ adverb
/ˈbækˌsteɪʤ/ adverb : behind the stage of a theater
▪ After the show, we went backstage to meet the band.
▪ After the show, we went backstage to meet the band.
— backstage adjective always used before a noun
▪ the backstage [=private] lives of celebrities ▪ a backstage pass [=a card that gives permission to go backstage and usually to meet the performers]
▪ the backstage [=private] lives of celebrities ▪ a backstage pass [=a card that gives permission to go backstage and usually to meet the performers]
