This was the first song that Phil Collins ever wrote. He recalled to Prog magazine: "It was in D minor, the saddest of chords [grinning]. No, it really was in D minor. It was a very naïve but heartfelt ballad. This would have been in the late 60s when I was 15, 16 years old. Then I dried up until the mid-'70s."
The track was recorded by Phil Collins' band The Freehold in 1968 at Regent Sounds, London. Freehold comprised Phil Collins (vocals), Jeff Slater, Les Mannering and John Hunt.
Adam from MarylandI know in that 2016 interview Collins said the song was in D minor, but if you go listen to it it's actually not - it's in E dorian mode, which is a minor mode that shares notes with the key of D major. Can't blame the guy though for misremembering details about a song he wrote ~50 years ago and probably has never played since.