Ol ' 55 performed a retro - fifties style of music , some of their hits included remakes of Diana , Goodnight Sweetheart , Teenager In Love , Ruby , Two Faces Have I and Looking for an Echo .
Ol ' 55 performed a retro - fifties style of music . 
 Some of their hits included remakes of Diana , Goodnight Sweetheart , Teenager In Love , Ruby , Two Faces Have I and Looking For An Echo .