, ▁Who ▁Are ▁You . ▁It ▁was ▁also ▁released ▁as ▁a ▁double ▁A - s ided ▁single ▁with ▁" Who ▁Are ▁You ", ▁making ▁it ▁Ent w ist le ' s ▁second ▁single ▁A - side , ▁after ▁" Post card " ▁from ▁O dd s ▁& ▁S ods ▁in ▁ 1 9 7 4 . ▁ ▁Background ▁Like ▁" 9 0 5 ", ▁" H ad ▁En ough " ▁was ▁planned ▁to ▁feature ▁on ▁a ▁rock ▁opera ▁in ▁the ▁process ▁of ▁being ▁written ▁by ▁Ent w ist le , ▁but ▁was ▁never ▁finished . ▁It ▁was ▁written ▁a ▁long ▁time ▁before ▁work ▁was ▁started ▁on ▁Who ▁Are ▁You . ▁The ▁lyr ics ▁describe ▁the ▁main ▁character ▁of ▁the ▁failed ▁rock ▁opera , ▁ 9 0 5 , ▁finally ▁sn apping ▁under ▁the ▁pressure ▁and ▁stress ▁of ▁his ▁life . ▁ ▁" H ad ▁En ough " ▁saw ▁single ▁release ▁as ▁a ▁double - A ▁side ▁single ▁with ▁" Who ▁Are ▁You " ▁in ▁ 1 9 7 8 ▁prior ▁to ▁the ▁Who ▁Are ▁You ▁album ' s ▁release . ▁Despite ▁this , ▁" H ad ▁En ough " ▁received ▁far ▁less ▁radio ▁air play ▁than ▁" Who ▁Are ▁You " ▁but ▁American ▁FM ▁rock ▁radio ▁played ▁the ▁song ▁frequently ▁after ▁its ▁release . ▁Ent w ist le ▁later ▁j oked ▁that ▁most ▁people ▁probably ▁thought ▁the ▁song ▁was ▁a ▁B - side ▁because ▁it ▁said ▁" Ent w ist le " ▁on ▁it . ▁It ▁was ▁never ▁performed ▁live ▁by ▁the ▁Who