"Space Oddity", recorded in January 1969, differs greatly from the LP version, including unused vocal harmonies and different lyrics.Rather than the softly spoken "lift-off", an American-accented "blast-off!" is present. "I'm floating in a most peculiar way" is replaced with "Can I please get back inside now, if I may?The demo's instrumentation uses only acoustic guitar and Stylophone, which were played by John 'Hutch' Hutchinson and Bowie, respectively. Bowie had used the Stylophone, a recently released electronic instrument that was mainly marketed to children, to compose the song's melody. Both Bowie and Hutchinson sang vocals And recorded further acoustic demos including a performance of the song on a promotional demo tape recorded for Mercury executives in March or April 1969.The first full studio version of "Space Oddity", which was for Love You till Tuesday, was recorded on 2 February 1969 at Morgan Studios, London. At this point, the lyrics were finalised.
