For the Soul Asylum song of the same name, see Let Your Dim Light Shine."Tell Me When" is a song by the British synthpop group The Human League. Written jointly by lead singer Philip Oakey and Paul C. Beckett, it was recorded at 'Human League Studios', Sheffield in 1994. The single and the Octopus album were produced by Ian Stanley (formerly of Tears for Fears)."Tell Me When" was the first Human League single to be released from Octopus and was issued in advance of the album.