‘Humming’ is a song written by Kate Bush. It was recorded as a demo, presumably in 1973. Also known as ‘Maybe’, the song was not released officially, but part of it was played during a radio interview in 1979 with Kate present.

In 2018, the track was finally released as part of the Remastered box set, on the album The Other Side 2. The song has been interpreted to be a tribute to David Bowie, after he abruptly announced the ‘retirement’ of his alter ego Ziggy Stardust at the Hammersmith Odeon on 3 July 1973.

Kate about ‘Humming’

I was waiting for the flat note in the middle

Personal Call, BBC Radio 1, 1979